Thanksgiving may be uniquely American, but its core spirit was exported from harvest festivals stretching back for millennia. Its essence is being grateful for what one has, while noting a duty to share one’s good fortune.

South African ranchers who raise rhinos are supporting a virtual currency, backed by stockpiles of valuable rhino horn, to fund protection of the threatened animals.

A dead sperm whale that washed ashore in a national park in Indonesia had nearly 6kg (13 lbs) of plastic waste in its stomach, park officials say.

There is plenty to panic about working in sustainability, and nothing is more fear-inducing than seeing cleared land where there once were trees.

Frances Arnold says she feels ‘deeply distressed’ by public mistrust of science

In a warming world, the dangers from natural disasters are changing. In a recent commentary, we identified a number of costly and deadly catastrophes that point to an increase in the risk of "cascading" events — ones that intensify the impacts of natural hazards and turn them into disasters.

Over the last year, there has been a surge of interest in the problem of ocean plastic pollution. The media drumbeat began with the now-infamous turtle video, continued through National Geographic’s year-long “Planet or Plastic” series, and hit a new high with the BBC release of “Blue Planet ll.”

South Africa’s largest city proudly notes that it has one of the world’s largest urban forests. But an invasive insect has been killing Johannesburg’s trees by the tens of thousands, and baffled experts are scrambling to find ways to stop it.

Whatever you want to call the rising use of shared bikes, scooters and vehicles — micro-mobility, Mobility-as-a-Service, shared active transportation — the trend isn't just about cool new gadgets, making investors incredibly wealthy or ticking off slow-moving cities