快猫短视频

Are birds that walk more advanced than those that hop? (continued)

New answers, including a reader鈥檚 experiment with rooks on motorways, and an appreciation of the wonders of bird legs

Why is the noise so loud when bottles drop into the recycling hopper?

This week鈥檚 new questions

Humans

How to make compost 鈥� your scientific guide

Space

Rare images show role of collisions in galactic evolution

Catnip as a mosquito repellent… What could go wrong?

Tom Gauld on which ideas to test first

Twisteddoodles on modern ways to photosynthesise

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

Where does the spin of celestial objects come from? The big bang?

Earth spins round the sun, the sun round the galaxy and galaxies spin on their axes. Where did this spin originate?

Plastic is inert, so why does it have a taste and smell?

This week鈥檚 new questions

Life

First ever high-res image taken of rare gazelles in a desert setting

Cutting meat for Veganuary? Here’s how to get your protein from beans