Astra Space Inc. has a pretty big goal: to make getting things into space way cheaper and way more often. Think of it like this – right now, launching a satellite can be a really big deal, taking a ...

A study exploring the mechanisms behind why cognitive performance improves in response to exercise, has found that dopamine plays a key role. A study exploring the mechanisms behind why cognitive ...

The roots of Russia's invasion of Ukraine go back decades and run deep. The current conflict is more than one country fighting to take over another; it is — in the words of one U.S. official — a shift ...