It stopped being alive and it never stopped moving. Here are fifteen.
1. It Is a Bundle of Tubes, Not a Solid
Wood is built from long hollow cells that…
It looks like a covering and behaves like a factory. Here are seventeen jobs.
1. Replacing Its Own Outer Layer Continuously
Cells are produced at the base of the outer…
Small, cheap and doing more than it looks like. Here are twelve.
1. Nearly All the Cooling Happens at the Melt
Warming ice from freezer temperature to zero takes a…
Cream is milk with most of the water taken out of the way, and the fat that remains behaves in ways the original liquid cannot. Here are fifteen.
1. It…
There is moss on the wall outside, on the north face of a gravestone, in the gaps between paving slabs, along the damp side of a tree. It looks like…
Nearly everyone learns that a rainbow is sunlight split into colours by raindrops, which is true and which explains almost none of the things that are actually strange about rainbows.…