The colour of the moon during a lunar eclipse can actually tell you something about the state of the atmosphere at the time. A particularly dark eclipse would indicate a huge eruption that pushed volcanic aerosols high up into the stratosphere. And scientists have been using ancient descriptions to get information about ancient volcanic eruptions.
00:44 The unusual receptors that let octopuses hunt by touch
Researchers have shown that the suckers of octopuses are covered with specialised receptors that allow them to taste by touching things. Similar receptors are also found in squid, but there are differences that mirror differences in the animals’ hunting behaviours; while octopuses feel for their prey, squid pull things towards themselves before deciding whether or not to eat it.
We discuss some highlights from the Nature Briefing. This time, what climate scientists can learn from medieval descriptions of lunar eclipses; how to retrieve rock samples from the surface of Mars; and the ongoing debate about whether T. rex had lips.