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'Planet Y' theory hints at hidden Earth-size world lurking in the solar system — and it could be much closer to us than 'Planet Nine'

A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth ...
Scientific American

Scientists Map Microbiome Hidden Deep inside Tree Trunks

Scientists have mapped microbe populations in human guts, deep-sea ecosystems and even clouds. Yet the microbial communities ...