Webs aren’t just for spiders.
They can, in fact, describe vast networks of interconnected relationships within ecosystems, based on the food preferences of plants and animals. Understanding a “food web” can tell scientists what sorts of species reside in...
The search for dark matter — the invisible glue that binds the cosmos and makes up most of the mass of galaxies — is a bit like looking for a needle in a near-infinite haystack.
For one thing, scientists don’t know exactly what dark matter is. They are...