杏吧原创

Life

Horizontal and vertical: The evolution of evolution

Darwinian selection cannot explain why all life on Earth shares the same genetic code 鈥� it looks like another form of evolution came first

Physics

Spasers set to sum: A new dawn for optical computing

Health

Zap that fat: Can lasers make you slimmer in minutes?

Humans

Five emotions you never knew you had

Health

Nuclear safety: When positive is negative

Space

Down to Earth: Gadgets from outer space

Health

The dangers of a high-information diet

Health

Let’s get physical: Nine facts about fitness

What counts as exercise?

How much, and how often?

Do you have to have a daily dose of exercise, or can you fit it in whenever you like?

How do you know if you’re getting fit?

Is pumping iron really necessary?

Can jogging kill you?

Is getting fit easier for some people?