Telltale Blood

ba-BUM…ba-BUM…ba-BUM…listen! Is that a “tell-tale heart?” This is Sandra Tsing Loh with the Loh Down on Science. You’ve seen the crime TV shows. A forensic expert recreates the scene of the crime just by looking at the blood spatters. From this, they solve the case! Well, not so fast, says

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Sexy Scary Wings

Can colors be scary and sexy at the same time? This is Sandra Tsing Loh, with the Loh Down on Science, saying: Yes! At least for butterflies. Consider the heliconius erato butterfly of Central America. It sports a red band on its black forewing and a yellow stripe on its

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