Condoms, cannibalism and brain control

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This week things get hot and heavy in The Green Room. The innocent spinifex grass is not only interesting for its doughnut shape, but its ability to make super-slim condoms. Speaking of safe sex, fungus has developed brain-control mechanisms to increase libido of infected organisms. How romantic. But do you want true romance? Male Monarch butterflies drink from live caterpillars so they can smell irresistible to the ladies.