A little bit obsessed with sport science. This is the only way I’ll pass physics.
Diatoms explain release of CO2
I love the discussion of argument from ignorance to argument of certainty.
Here’s a very fun animated tessellation picturing birds and cats. Animation truly brings a new dimension to these kind of pictures that use repetition of shapes with no overlaps and no gaps – it additionally helps you see both variations of the image, no matter whether you originally recognised the empty space containing cat shapes, white space containing birds, or both!