Why Don’t Birds Lay Square Eggs?

What is ”egg-shaped” even? I used to think it was the shape of a chicken egg. Then one day I saw a collection of eggs from lots of different bird species, and I realized just how many different kind of egg shapes there really are! I had to know why. And it turns out a couple teams of scientists had wondered the same thing. Here’s what science says about why eggs are egg-shaped, if that’s even a thing, which I’ve learned it might not be. Evolution of bird eggs, go!

Why white horses aren’t bothered by horse-flies – submitted by Joanne O’Meara

Susanne Åkesson, Professor of Evolutionary Ecology at Lund University in Sweden, has been awarded the prestigious Ig Nobel Prize. The prize, which she shares with six other researchers from Hungary and Spain, was presented to them for their discovery that white horses aren’t particularly bothered by blood-sucking horse-flies. Continue reading

Why don’t poisonous animals poison themselves? – TED Ed by Rebecca D. Tarvin

Thousands of animal species use toxic chemicals to defend themselves from predators. Snakes have blood clotting compounds in their fangs, the bombardier beetle has corrosive liquid in its abdomen and jellyfish have venomous, harpoon-like structures in their tentacles. But how do these animals survive their own poisons? Continue reading

Engineering, psychology and ‘lots of poo’: How NASA is tackling Mars mission’s mind-bending to-do list | CBC News

To make a crewed Mars mission possible, there are incredibly complex problems that need to be solved. Here are some of the things at the top of NASA’s to-do list, and how engineers and psychologists are figuring them out. Continue reading