Researchers have just published a study that for the first time shows physical changes in trees that in some ways correspond to day-night cycles.

Newly discovered evidence of a previously unknown population of Tasmanian devils could provide the genetic diversity that may be crucial to saving the devils from a deadly facial cancer.

Dating a rock formation deep in a cave in France reveals Neanderthals were much more advanced than previously thought.

Two Armenian physicists have published a study looking at a possible link between dark energy and the direction of time. Dark energy could, they suggest, be the reason why time goes forwards but cannot go backwards.

• The Arrow of Time - Wonders of the Universe
• Psychiatric hospitals filling up with time travellers sent back to kill Donald Trump

Listener Chris sent us some interesting information as a follow up to our story about Mt. St Helens.

 

This episode contains traces of Professor Brian Cox talking about the eventual end of the universe.