Since early dinosaurs, birds have reduced the number of bones in their wrist, but the origins and identity of those remaining are hard to trace / 2014 Robin Meadows, adapted from 2014 Botelho et al., PLoS Biology
Wrist bones became heavily remodeled somewhere along the way between early dinosaurs and modern birds. Researchers combining new analyses of modern bird embryos and fossils reveal how wrists were modernized, if you will, over millions of years. These previously undetected processes of loss, fusion, and even the “re-evolution” of a lost bone are described in a PLOS Biologystudy this week.
Loss of ice in Antarctica has been discussed extensively due to its implications for rising sea levels and the changing landscape of the continent, but it turns out that there is another unexpected effect: dips in gravity.
A team of European astronomers has stumbled upon a family gathering in space: twin stars in a binary system, each hosting Jupiter-sized exoplanet “cousins.” The exciting discovery was made while a team of British, Swiss and Belgian scientists were studying a star called WASP-94A. They first found evidence for the presence of a “hot Jupiter” exoplanet around this host, and then while continuing to probe this system, they accidentally discovered another star.
NASA's Goddard Space Flight Center/S. Wiessinger
Astronomers using NASA's Swift satellite spotted a massive solar flare coming from a tiny star on April 23. The explosion was over 10,000 times more intense than anything that has been recorded from our Sun.
Adam Malski/Nick Johnson/Kyle Waters. Two great white sharks do battle off Australia's coast
Diver Adam Malski filmed a battle between two great white sharks 50 kilometers off the coast of South Australia's Neptune Islands. The islands are a popular destination for tourists interested in great white sharks. The attacker was a 4.8 meter Carcharodon carcharias known as Gilbert. The unnamed smaller shark has not been seen since the fight, so Malski does not know if he survived.