The Mighty Mekong is one of the world's most iconic rivers, but it is at grave risk of turning into a shadow of its former self.
There are plenty of microplastics in the oceans, yet just how much of the stuff is out there may well come as a shock.
The question of population is more complex that it may seem in the context of climate change.
Plants in tropical forests are by nature resistant to heat, yet that resistance has its limits.
The current crisis could spell the end of fossil fuels or at least their dominance.
Birds that inhabit river banks swallow tiny bits of plastic debris at a rate of hundreds a day.