For certain species of spider, sex culminates with the male getting eaten. But not all spiders go meekly into the jaws of their partners. Some males tie their mates up to avoid becoming a meal. Others copulate with females before they have grown into mature sexual cannibals, scientists reported September 20 in the journal Biology Letters.
The courtship song of the midshipman fish is a pleasure that can only be enjoyed by night. It turns out that these long, droning hums follow a daily rhythm that is set by light and the hormone melatonin. With enough light, singing fish can be made to quiet down, a condition that is remedied with a boost of melatonin, scientists reported today in the journal Current Biology.
Today, the Paris Agreement got a big boost. 31 countries ratified or accepted the Paris Agreement, an internationa climate change treaty, an international climate change treaty that calls upon nations to reduce their total greenhouse gas emissions. The goal is to try and stave off the worst effects of global warming, such as extreme temperatures and sea level rise.
They might not always know the difference between a straw and a french fry, but pigeons can judge each other's leadership skills. They might also be able to read the news about their fallen leaders. Well, almost. How they learn to recognize words could provide insights on the origins of language, according to a study published in PNAS.