How climate change drives the spread of invasive plants

As the climate warms, the number of alien species on every continent is expected to increase 36% by 2050. Some alien species—that is, plants or animals that live outside their natural range—are invasive and can harm ecosystems ...

How we could snoop on extraterrestrial communications networks

The conditions for life throughout the universe are so plentiful that it seems reasonable to presume there must be extra-terrestrial civilizations in the galaxy. But if that's true, where are they? The Search for Extra-terrestrial ...

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Alien

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