51动漫

Why don鈥檛 orcas attack humans? part 3

Looking at other marine predators could explain why orcas don鈥檛 attack us, argues one reader

Tom Gauld on robot dreams

Can acquired tastes become unacquired?

Why do we scrunch up our eyes when we want to see more clearly?

Twisteddoodles on birds’ beaks and their diets

Comment

How many academics does it take to tell a joke? Time for a study…

Twisteddoodles on going up against gravity

Tom Gauld on the perils of time travel

Sebastian Di Domenico, Colombia, Shortlist, Latin America Professional Award, Sony World Photography Awards 2026 The Andean bear is the only bear species in South America and is listed as ?Vulnerable? on the IUCN Red List of Threatened Species. In Colombia, the largest population of the species can be found just two hours? drive from Bogota, close to Chingaza National Park. While these curious animals are more herbivorous than many other bear species, they will occasionally kill cattle which attracts more bears into the area and increasingly puts them in contact with locals and visitors. Tourism initiatives and education might hold the key to ensuring a safe future for one of the most important Andean bear populations in Colombia.

Life

Rare Andean bear captured in stunning photograph

Is foam a solid, a liquid or a gas?

Foam is a colloid, a small amount of liquid or solid wrapped around a lot of gas, explain our readers 聽

Can a person experience more than 24 hours in a day? part 2

This week鈥檚 new questions

Comment

How big is a ‘shedload’? Let’s ask the nuclear physicists

Tom Gauld on truly committing to botany