David Suzuki

More than a billion people lack adequate access to clean water.

The future doesn't exist. The only thing that exists is now and our memory of what happened in the past. But because we invented the idea of a future, we're the only animal that realized we can affect the future by what we do today.

We have much to learn by studying nature and taking the time to tease out its secrets.

More than any other time in history, the 1990s will be a turning point for human civilization.

Some solutions are relatively simple and would provide economic benefits: implementing measures to conserve energy, putting a price on carbon through taxes and cap-and-trade and shifting from fossil fuels to clean and renewable energy sources.

Some argue we should get coal, oil and gas out of the ground as quickly as possible, build more pipelines and make as much money as we can selling it here and abroad. Their priorities are the economy and meeting short-term energy needs so we can live the lives to which we've become accustomed.

The human brain had a vast memory storage. It made us curious and very creative.Those were the characteristics that gave us an advantage curiosity creativity and memory. And that brain did something very special. It invented an idea called the future.

Scientists have been warning about global warming for decades. It's too late to stop it now, but we can lessen its severity and impacts.

From year to year, environmental changes are incremental and often barely register in our lives, but from evolutionary or geological perspectives, what is happening is explosive change.

It is not too late to take another path.

The truth is, as most of us know, that global warming is real and humans are major contributors, mainly because we wastefully burn fossil fuels.

The medical literature tells us that the most effective ways to reduce the risk of heart disease, cancer, stroke, diabetes, Alzheimer's, and many more problems are through healthy diet and exercise. Our bodies have evolved to move, yet we now use the energy in oil instead of muscles to do our work.

If America wants to retain its position as a global power, its president must listen to the people and show strong leadership at this turning point in human history.

Thanks to evolution, our bodies have powerful ways to ward off illness and infection and enable us to live long and healthy lives. Why, then, do health costs continue to climb at unsustainable and frightening rates?

Treaties, agreements and organizations to help settle disputes may be necessary, but they often favor the interests of business over citizens.

Conserving energy and thus saving money, reducing consumption of unnecessary products and packaging and shifting to a clean-energy economy would likely hurt the bottom line of polluting industries, but would undoubtedly have positive effects for most of us.

Education has failed in a very serious way to convey the most important lesson science can teach: skepticism.

If we pollute the air water and soil that keep us alive and well and destroy the biodiversity that allows natural systems to function no amount of money will save us.

I fell in love with the elegance and precision of genetic analysis and experimentation to answer profound biological questions.

Because countries often have differing political and economic systems, agreements are needed to protect those invested in trade.

Change is never easy and it often creates discord but when people come together for the good of humanity and the Earth we can accomplish great things.

Most North Americans know that human-caused global warming is real, even if political leaders don't always reflect or act on that knowledge.

I've always been more interested in organisms that can move on their own than in stationary plants. But when I canoe or hike along the edge of lakes or oceans and see trees that seem to be growing out of rock faces, I am blown away. How do they do it?

Birds are especially canaries are super sensitive to hydrogen sulfide and sour gas.

Just as human activity is upsetting Earth's carbon cycle, our actions are altering the water cycle.

The whole sector of public dialogue has been totally contaminated, deliberately, by the corporate sector. The whole purpose is to sow confusion and doubt, and it's worked.

Too often, governments are quick to use excessive force and even pervert the course of justice to keep oil and gas flowing, forests logged, wild rivers dammed and minerals extracted. As the Global Witness study reveals, citizens are often killed, too - especially if they're poor and indigenous.

The failure of world leaders to act on the critical issue of global warming is often blamed on economic considerations.

Birds are, especially canaries, are super sensitive to hydrogen sulfide and sour gas.

The human brain now holds the key to our future. We have to recall the image of the planet from outer space: a single entity in which air, water, and continents are interconnected. That is our home.

Over and over, we hear politicians say they can't spend our tax dollars on environmental protection when the economy is so fragile.

All those hours exploring the great outdoors made me more resilient and confident.

Geothermal can be a huge source of energy very quickly.

We are over 60 percent water by weight. We're just a big ball of... blob of water, with enough organic thickener added so we don't dribble away on the floor.

We humans have become dependent on plastic for a range of uses, from packaging to products. Reducing our use of plastic bags is an easy place to start getting our addiction under control.

There are more humans than all of the rabbits on earth. There are more of us than all the wildebeests, than all the rats, than all the mice. We are the most numerous mammal on the planet. But because we're not like rabbits or rats or mice, we have technology, we have a consumptive appetite, we have a global economy.

It's not unexpected that shooting massive amounts of water, sand, and chemicals at high pressure into the earth to shatter shale and release natural gas might shake things up. But earthquakes aren't the worst problem with fracking.

We can't blame children for occupying themselves with Facebook rather than playing in the mud. Our society doesn't put a priority on connecting with nature. In fact, too often we tell them it's dirty and dangerous.

Although it's the second largest country in the world, our useful area has been reduced. Our immigration policy is disgusting: We plunder southern countries by depriving them of future leaders, and we want to increase our population to support economic growth.

Planting native species in our gardens and communities is increasingly important, because indigenous insects, birds and wildlife rely on them. Over thousands, and sometimes millions, of years they have co-evolved to live in local climate and soil conditions.

We have altered the physical, chemical and biological properties of the planet on a geological scale. We have left no part of the globe untouched.

Many countries - as well as cities, states and provinces - are taking global warming seriously and are working to reduce emissions and shift to cleaner energy sources.

Nature surrounds us, from parks and backyards to streets and alleyways. Next time you go out for a walk, tread gently and remember that we are both inhabitants and stewards of nature in our neighbourhoods.

Many scientists and economists also say putting a price on carbon through carbon taxes and/or cap-and-trade is necessary.

Although it's difficult, if not impossible, to put a dollar value on the numerous services nature provides, leaving them out of economic calculations means they are often ignored.

We need love, and to ensure love, we need to have full employment, and we need social justice. We need gender equity. We need freedom from hunger. These are our most fundamental needs as social creatures.

The voluntary approach to corporate social responsibility has failed in many cases.

My childhood memories include a time when the government confiscated my family's possessions and exiled us to a camp in the B.C. Interior, just because my grandparents were from Japan.

Scientists are being portrayed by much of the power structure in politics and business as having a vested interest - that they're just out to get more grant money by exaggerating the threats.

Being an environmentalist isn't all about doom and gloom.

Rapid population growth and technological innovation, combined with our lack of understanding about how the natural systems of which we are a part work, have created a mess.

Humans are distinguished from other species by a massive brain that enables us to imagine a future and influence it by what we do in the present. By using experience, knowledge and insight, our ancestors recognized they could anticipate dangers and opportunities and take steps to exploit advantages and avoid hazards.

Beyond reducing individual use, one of our top priorities must be to move from fossil fuels to energy that has fewer detrimental effects on water supplies and fewer environmental impacts overall.

We pride ourselves on our democratic traditions, but in Canada, women couldn't vote until 1918, Asians until 1948, and First Nations people living on reserves until 1960.

One of the joys of being a grandparent is getting to see the world again through the eyes of a child.

Canada more than any nation will be affected by rising sea levels from global warming.

In the environmental movement every time you lose a battle its for good but our victories always seem to be temporary and we keep fighting them over and over again.

The damage that climate change is causing and that will get worse if we fail to act goes beyond the hundreds of thousands of lives, homes and businesses lost, ecosystems destroyed, species driven to extinction, infrastructure smashed and people inconvenienced.

Scientists and supercomputers have amplified our ability to look ahead. For decades, experts have warned us that human numbers, technology, hyper-consumption and a global economy are altering the chemical, geological, and biological properties of the biosphere.

Hydraulic fracturing requires massive amounts of water. Disposing of the toxic wastewater, as well as accidental spills, can contaminate drinking water and harm human health.

I can't imagine anything more important than air, water, soil, energy and biodiversity. These are the things that keep us alive.

I feel humiliated that I live in a country that demands more already. Why do we cling to the notion that not only must we maintain the current level of consumption, but that it must continue to grow by an exponential factor of 2 to 7 percent every year?

Environmentalism has failed.

Scientists generally are really chicken about getting involved in some kind of dispute. As a broadcaster, I find it very difficult to urge them, if it is a controversial subject. They don't want to have science being portrayed badly.

Do you know how much land is under ice, rock and snow? Do you know why 90 percent of us live within 100 kilometres of the U.S. border? We have this idea we're a vast country. But the reality is that a lot of it, a huge amount, is uninhabitable.

Exxon, one of the companies that has spent tens of millions of dollars denying climate change, denying any responsibility to deal with, taking government subsidies on a massive scale, now their ads are all about, 'Oh, we want a clean future. We're looking at clean energy and all that stuff.'

My parents survived the Great Depression and brought me up to live within my means, save some for tomorrow, share and don't be greedy, work hard for the necessities in life knowing that money does not make you better or more important than anyone else. So, extravagance has been bred out of my DNA.

In the environmental movement, every time you lose a battle it's for good, but our victories always seem to be temporary and we keep fighting them over and over again.

Faced with the evidence, many deniers have started to admit that global warming is real, but argue that humans have little or nothing to do with it.

Our personal consumer choices have ecological, social, and spiritual consequences. It is time to re-examine some of our deeply held notions that underlie our lifestyles.

With the world's human population now at seven billion and growing, and the demand for technology and modern conveniences increasing, we can't control all our negative impacts. But we have to find better ways to live within the limits nature and its cycles impose.

If we want to address global warming, along with the other environmental problems associated with our continued rush to burn our precious fossil fuels as quickly as possible, we must learn to use our resources more wisely, kick our addiction, and quickly start turning to sources of energy that have fewer negative impacts.

Humans are an infant species, a mere 150,000 years old. But, armed with a massive brain, we've not only survived, we've used our wits to adapt to and flourish in habitats as varied as deserts, Arctic tundra, tropical rainforests, wetlands and high mountain ranges.

Think about a seed. Once it lands, it's stuck. It can't move to find better soil, moisture or sunlight. It's able to create every part of itself to grow and reproduce with the help of air, water and sun.

We're in a giant car heading towards a brick wall and everyone's arguing over where they're going to sit.

The increasing frequency of extreme weather events, droughts and floods is in line with what climate scientists have been predicting for decades - and evidence is mounting that what's happening is more severe than predicted, and will get far worse still if we fail to act.

Canada should always open its doors to those who are oppressed or in cases of emergency. When Canada offered refuge to 50,000 boat people in Vietnam in the 1970s, I was particularly proud to be Canadian.

You would have thought that our first priority would be to ask what the ecologists are finding out, because we have to live within the conditions and principles they define. Instead, we've elevated the economy above ecology.

Japan is a model already to the lie that economic growth is the key to our future. If they can really show an alternative to nukes and fossil fuels, then they will be the poster boy for the renewable energy for the future.

It's time we stopped ignoring the environment. Let's not let another election go by without making this a high priority.

Over and over, the economy has determined the extent of our response, but how much value does it place on breathable air, drinkable water, edible food and stable weather and climate? Surely the economy is the means to a better future, not an end in itself. Surely it must be subordinate to a rich, diverse ecosphere that sustains all life.

What about our children and grandchildren and their children and grandchildren? Do we not want them to live healthy and happy lives?

We must pay greater attention to keeping our bodies and minds healthy and able to heal. Yet we are making it difficult for our defences to work. We allow things to be sold that should not be called food. Many have no nutritive value and lead to obesity, salt imbalance, and allergies.

As parents, grandparents, uncles and aunts we need to start getting out into nature with the young people in our lives. Families play a key role in getting kids outside.

The human brain had a vast memory storage. It made us curious and very creative. Those were the characteristics that gave us an advantage - curiosity, creativity and memory. And that brain did something very special. It invented an idea called 'the future.'

Ultimately we need to recognize that while humans continue to build urban landscapes, we share these spaces with others species.

People don't even understand that every bit of our food was once alive. We take another creature, plant, animal, microorganism, tear it apart in our mouths. And incorporate those molecules into our own bodies. We are the Earth in the most profound way.

Global trade has advantages. For starters, it allows those of us who live through winter to eat fresh produce year-round. And it provides economic benefits to farmers who grow that food.

When I was a kid, being outside was the norm. Rain or shine, our parents would tell us to get out of the house.

Corporations are economic entities or structures, and yet they're allowed to fund political candidates, and when those candidates are elected, guess who gets in the door first? It's corporations.

I read in 'Life' magazine that Asians had developed an operation to enlarge eyes, and I yearned to have this done. I wanted to dye my hair brown and to anglicize my name. Self-hate was the most terrible cost of the war years for me.

Just as fossil fuels from conventional sources are finite and are becoming depleted, those from difficult sources will also run out. If we put all our energy and resources into continued fossil fuel extraction, we will have lost an opportunity to have invested in renewable energy.

We must reinvent a future free of blinders so that we can choose from real options.

If we have any hope of finding ways for seven billion people to live well on planet with finite resources, we have to learn to use our resources efficiently. Plastic bags are neither efficient nor environmentally friendly.

Change is never easy, and it often creates discord, but when people come together for the good of humanity and the Earth, we can accomplish great things.

What we are doing is, rather than living on the interest of our basic biological capital, we're using up our capital, so we're dipping into our capital. We're using up what should be our children's and grandchildren's legacy.

This is suicidal... our home is the biosphere. That's a very thin layer of air, water and land where all life exists. It's fixed, it can't grow, and yet we cling to this idea that the economy can grow forever. And it must. Well, it can't.

Environmentalism isn't a discipline or specialty. It's a way of seeing our place in the world. And we need everybody to see the world that way. Don't think 'In order to make a difference I have to become an environmentalist.'

A baby nursing at a mothers breast is an undeniable affirmation of our rootedness in nature

If you're not being pessimistic, you're not being very realistic. But I think one must always have hope, and when you have children, of course, you have no choice but to work your tail off to try and protect the future for your children. And that is infused by hope in the end.