From toxicity to life: Arsenic proves to be a building block

LIVERMORE, Calif. – Arsenic – an element that triggers death for most Earthly life forms – is actually allowing for a bacterium to thrive and reproduce.
In a study that may prompt the rewriting of textbooks, a team of astrobiologists and chemists…

Animal evolution springs from ‘Snowball Earth’

Biogeochemists have found new evidence linking “Snowball Earth” glacial events to the rise of early animals. The research was funded by the National Science Foundation (NSF).
Study results appear in this week’s issue of the journal Nature.

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