Peer Review Where a scientific report is sent out to peers (other scientists) who examine the data and results, and if they think that the conclusion is reasonable it's published.

Model A simplified picture of what's physically going on.

Prediction/Hypothesis A specific testable statement, based on a theory, about what will happen in a test situation.

Variable A quantity that has the potential to change, e.g. weight, temperature, concentration.

Prediction/Hypothesis A specific testable statement, based on a theory, about what will happen in a test situation

Precise Result A result that is really close to the mean.

Random Error A difference in measurement caused by an unpredictable factor, e.g. human error.

Repeatable Result A Result that can be repeated by the same person using the same method and equipment.

Reproducible Result A result that can be consistently reproduced in an independent experiment.

Valid Conclusion A conclusion that answers the original question.

Accurate Result A result that is really close to the true answer.

Variable A quantity that has the potential to change, e.g. weight, temperature, concentration.

Independent Variable The variable you change in an experiment.

Dependent Variable The variable you measure in an experiment.

Control Group A group in a study that is treated in exactly the same way as the experimental group, apart from the factor you're investigating.

Placebo A dummy pill or injection that looks exactly like the real drug, but doesn't contain the drug.

Sample size The number of samples in the investigation, e.g. the number of people in a drug trial

The homosexual community has more acceptance in America than it ever has, and the suicide rate is as high as it's always been.

It is better to be safe than sorry.

The lyrics are always the last thing I do. I always have a recording of basic tracks and maybe some of the lead work. I'll sit back and listen to it, and I'll just concentrate on what kind of feeling it gives me. My goal writing the lyrics is to not disrupt that feeling.

Smiling is definitely one of the best beauty remedies. If you have a good sense of humor and a good approach to life, that's beautiful.

The intersection of political analysis and Internet theory is a busy crossroad of cliche, where familiar rhetorical vehicles - decentralized authority, emergent leadership, empowered grass roots - create a ceaseless buzz.

I love the idea of farm to table and farmer's markets. I enjoy a meal more if I know I'm eating something that's good quality and good for me.

I use this brand called Ouidad; they're great. Not Your Mother's is another one. Garnier Fructis. I use a bunch of stuff. Literally, I just throw a huge concoction of stuff in my hair after I get out of the shower, and then I diffuse it.

Here's my definition of a great beach read - a fabulous story that sucks me in like a black hole and when it's over, it jettisons my bones across the galaxy with a hair on fire mission to convince everyone I know that they must read that book or they will die.

Men think a woman should not have an opinion.

Too many people look at it as though it the hijab has bizarre powers sewn into its microfibers. Powers that transform Muslim girls into UCOs Unidentified Covered Objects which turn Muslim girls from an us to a them.

Whatever I feel, I say frankly.

Children have such vibrant minds. They need to play. They need to be creative. They need to imagine. It's so important for their sense of self discovery. And it helps them learn problem-solving.

I started out when I was about 12, playing drums. I started singing when I was about 15.

I've been in a lot of trouble and come out of it. I think it shows a lot of good character.

We live by encouragement and die without it - slowly, sadly and angrily.

Dance is something which I like to do, but acting is my passion. I would like to do good and meaty roles.

It wasn't that I couldn't write. I wrote every day. I actually worked really hard at writing. At my desk by 7 A.M., would work a full eight and more. Scribbled at the dinner table, in bed, on the toilet, on the No. 6 train, at Shea Stadium. I did everything I could. But none of it worked.

Kids at a certain age don't necessarily want to be dragged to the other side of the world.

I was making more electronic and synth-based music, and when I changed my name, it helped me grow and liberate myself a little bit.

I get a good colour in summer but go really pale in winter, and it genuinely doesn't suit me, as people ask me if I'm ill. As well as making me look a bit better, I often have to be tanned in the middle of winter to do a show or programme, so I've road-tested every fake tan on the market.

I actually love going to a lot of theater movies. I just love watching actors work and seeing how people tell stories.

One of the things that I thought really worked was that you have 'Smallville' on television and 'Superman Returns' come out in the theater, and it was fine. Nobody freaked out; nobody thought they were competing.

Show business is, essentially, a fear-based industry.

I have friends struggling with autism, juvenile diabetes.