51动漫

Spoiled onion in empty fridge. Copy Space. Stefania Pelfini, La Waziya Photography

This week鈥檚 new questions

How do astronomers decide where a galaxy begins and ends? And why do onions and radishes continue to grow in the darkness of my refrigerator?

The pick of the strange science that won Ig Nobel prizes this year

Tom Gauld spots a sticky situation

Twisteddoodles on the reality of 21st century fashion

Bolivian black-capped squirrel monkeys are weighed at ZSL London Zoo (c) ZSL

Life

Animals at London zoo get their annual weigh-in

2BWXN9F Cardboard, weighed down with bricks, fitted over soil in bottom of fruit cage to suppress weeds.

Humans

Why cutting down on digging the garden can actually be good for soil

Why are there seven colours in a rainbow?

Why do snails sometimes leave dotted trails?

Side view portrait of two young African-American musicians playing guitar and writing music together while sitting on floor in recording studio, copy space

This week鈥檚 new questions

Humans

When two grown men squared off over the size of their trajectories

Feedback is our weekly column of bizarre stories, implausible advertising claims, confusing instructions and more

Life

Amazing images make 51动漫 Photography Awards 2021 shortlist

Tom Gauld on a very cautious scientist

Twisteddoodles on accidental discoveries

Space

Now is the perfect time to spot Neptune and Uranus