Brits are set for more icy weather later this month with maps showing heavy snow and rain set to fall amid sub-zero ...
The idea of the Earth once being a purple world has the “Purple Earth” hypothesis behind it, a speculation that the earliest forms of life on Earth had a different molecule instead of chlorophyll ...
Some scientists propose that Earth was once covered in shades of purple instead of green. The idea suggests early life forms used a different molecule for photosynthesis than today’s chlorophyll.
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