Volcanic eruptions, especially big ones, potentially have worldwide climate impacts. The other thing that it might be relevant to is this idea of solar geoengineering. It's possible that volcanic eruptions are kind of the only sort of similar thing that we could possibly compare it to in terms of what might happen if we put various things up in our atmosphere to try and stop global warming.
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.