How much of the warming can be attributed to natural and manmade causes remains little understood.
The iconic big cats are being killed for their fangs and other body parts so they can be used in traditional Chinese medicine.
Less than a fifth, or 17.%, of e-waste was collected and recycled last year, leaving the rest unrecycled.
In the next 50 years, it's likely to become too hot for some plant seeds to germinate in the tropics. That may reduce species survival.
“Archaeologists and anthropologists have been trying to figure out what happened to the Maya for 100 years."
A third of the planet's coal plants are already costlier to operate than building new renewable power sources.