Many of the coal beds that Britain came to rely on formed at this time, made up of plants like P. withamii. When the fossil tree was alive it’s thought that it would have had fern-like fronds that ...

The math concept hidden in this tree art — geometric shapes known ... they’re also often related to function. For example, branching enables trees to transport fluid, harvest light and ...

Photographing a canyon, for example, you might see that the west ... camera will be capable of rendering it only as a great black blob. Unless this is the effect you want, you'll either have ...