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.

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.

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

Just the other day, my assistant was on the line with Calvin Klein. Golly, I usually shop at Sears.

To love yourself right now, just as you are, is to give yourself heaven. Don’t wait until you die. If you wait, you die now. If you love, you live now.

For me, it's important that I can talk to my customers all over the world. They can comment on what they like, tell me what fits - we have a daily dialogue. I can also see what she looks like and how she wears my shoes, which is a huge advantage. Thank God for Instagram; it helps me keep connected.

If you ain't thinkin' about man and God and law, then you ain't thinkin' about nothin'.

You have not fully expressed your power as a voter until you have scientific literacy in topics that matter for future political issues.

My father was an engineer and my mother was a social worker, and they met as young socialists. That probably tells you everything you need to know about my attitude to money - I've never really been bothered about it.

The most important kind of freedom is to be what you really are.

No man deserves to be praised for his goodness, who has it not in his power to be wicked. Goodness without that power is generally nothing more than sloth, or an impotence of will.

You go into the Lions camp with preconceived ideas about players and teams and then find guys are actually very different, and the beauty of the Lions is that all those characters are moulded into it. I find that exciting.

Second, there are two problems with respect to mobile homes in particular. One is we obviously don't want to put them in a flood plain, because if there's another flood, you're going to lose the mobile home.

I'm optimistic about people and about the planet and about nature. I think it's resilient, like people are.

When it came to my art, I went my own way and did not follow the trends.

Just do your best. I find that if I set that goal for myself and no one else, I feel good.

Growing up in Minnesota, I had a lot of freedom to run around, and we had go-carts and four-wheelers and all that stuff. I like that adrenalin-rush stuff. I did a little bit of dance, but mostly sports.

Your absence has not taught me how to be alone; it has merely shown me that when together we cast a single shadow on the wall.

Initially, the horrific images of September 11th triggered an enormous wave of solidarity.

Feminism is a political mistake. Feminism is a mistake made by women's intellect, a mistake which her instinct will recognize.

A whole album to one writer - now that would be really interesting.

I never thought of myself as like, a funny person.

You think your friends have good taste in fashion until they ask you to wear an ugly bridesmaid dress

I like poems that are complex.

As regards parents, I should like to see them as highly educated as possible, and I do not restrict this remark to fathers alone.

Remember these two things: play hard and have fun.

I consider myself a writer. I don't favour any type of writing. I sometimes wish short stories came more easily to me.