The mystery of the secretly sexual lichens

The patches of lichen you've probably seen growing on tree trunks and park benches might be easy to overlook, but they're actually some of the world's strangest living things. While they're sometimes mistaken for moss, lichens ...

Oldest known alphabet unearthed in ancient Syrian city

What appears to be evidence of the oldest alphabetic writing in human history is etched onto finger-length, clay cylinders excavated from a tomb in Syria by a team of Johns Hopkins University researchers.

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