Rare fossil reveals ancient leeches weren't bloodsuckers

A newly described fossil reveals that leeches are at least 200 million years older than scientists previously thought, and that their earliest ancestors may have feasted not on blood, but on smaller marine creatures.

From beer to useful fats and medicines

The residues that remain when a brewery makes beer or whiskey are called spent grain or brewer's spent grain (BSG). Spent grain is available in large quantities, and is full of proteins and amino acids that should be possible ...

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