Forget the traditional battlegrounds of land, sea and air. Rapid developments in technology and our reliance on satellites for everything from communication to navigation are pushing conflicts into a new arena: outer space.
There are 100 billion stars in our Galaxy – surely we can’t be the only intelligent lifeform out there? In this week’s Science Focus Podcast we ask Mike Garrett what we’ll do if we find them, and what it means for us as humans.
It may taste good on crisps, but too much sea salt can be harmful to fish and plants.
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