Strong current can kill us, but electrical impulses let us live—a power even the ancients may have attempted to exploit.

It is deadly, invisible and shapes much of the food we eat. A teaspoon of it could kill millions of people, and it is probably the most expensive material on earth. Yet you probably have some stuck to the bottom of you shoe.

Problem: Show that all horses are of the same color.
“Solution”: We will show, by induction, that for any set of $ n$ horses, every horse in that set has the same color. Suppose $ n=1$, this is obviously true. Now suppose for all sets of $ n$ horses, every…

One anthropologist contends that far too many species have been lumped into one category: Our story is more complicated, he argues.

The James Webb Space Telescope has the potential to rewrite the history of the cosmos and reshape humanity’s position within it. But first, a lot of things have to work just right.

Лиана Липанова Транспорт 10.12.2021