Invasive species problem will be 'worse before it gets better'

On land and in the sea, invasive species are destroying ecosystems, spreading disease and causing hundreds of billions of dollars in damage every year, according to a landmark report Monday from the UN-backed science advisory ...

Woolly stars need catastrophes to live

A small, crunchy, spiny plant redefines toughness as it thrives on catastrophic flooding. The endangered Santa Ana Woolly Star does not just prosper with floods, though; it depends on them. Thanks to a huge dam, natural floods ...

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