女生小视频

Should we genetically engineer cats to stop their urge to kill?

If it were possible to tinker with the genome of domestic cats to reduce their urge to hunt wildlife, would this be desirable? One cat writes in with an interesting suggestion

If there are other universes, would our universe feel their gravity?

Why do wet dogs like to shake themselves dry beside people? (continued)

This week鈥檚 new questions

How far can you go before the sun no longer appears the shiniest star?

Why do people鈥檚 hands shake when they are nervous?

In fizzy drinks, why do only larger bubbles oscillate as they rise?

This week鈥檚 new questions

What causes ice spikes to form in frozen puddles or bowls of water?

Do other animals have fingerprints? And what purpose do they serve?

It turns out we aren鈥檛 the only creatures with fingerprints 鈥� and there are many reasons they could have evolved. And the fingerprints of an unexpected animal might even be confusing the police databases in Australia.

This week鈥檚 new questions

How long is 鈥榥ow鈥�, the gap between the past and future? (continued)

What is the evolutionary advantage of birds鈥� ability to mimic sounds?

What is the smallest animal with eyes and could it see a molecule? (continued)