In 2019, Nasa's New Horizons spacecraft will fly past a mysterious, distant object - currently known as (486958) 2014 MU69 - in the outer regions of the solar system.
Greenpeace estimates that 12.7 million tonnes of plastic waste – including bags, bottles, and packaging – eventually makes its way into the oceans every year.
The largest survey of ayahuasca users to date lends support to the notion that the brew could be an important and powerful tool in treating depression and alcohol addiction.
Weighing around 50kg, Siamogale melilutra was much larger than any other living otter and likely would have been a formidable hunter as a result of its powerful bite and size.