This year's climate conference is convening in the heart of Poland's coal country. As the world meets to negotiate a follow-up to the landmark Paris Agreement of 2015, Poland's leaders are promising continued reliance on coal.
As the Arctic warms, it’s opening up a whole new economic frontier, with big opportunities for tourism, shipping and resource development, including oil and gas. But that also brings a whole new array of risks for the region and the world.
Negotiators have agreed to a global phase-out of chemicals that run some air conditioners and refrigerators, but are also big contributors to global warming. That has countries and researchers scrambling to come up with clean and affordable alternatives.
There may be a counterintuitive explanation for the deep freeze that hit New England this winter: The rapidly warming Arctic is causing big disruptions in the jet stream, which carries weather across North America. Is this the worst winter you've experienced?
Unhappy with the economics of his rooftop solar panels, a German tinkerer invents his own electricity storage system that saves users hundres of dollars a year, makes it easier to integrate renewables into the grid, and wins an award for renewable product of the year.