Schools in Beijing were shut after China issued a smog warning, with the thick shroud of grey cloud expected to hang until Thursday.
Efforts to curb pollution in India's sprawling capital have sent some residents scurrying to an unlikely source: their math books.
In the Netherlands one innovative project is looking to convert cycle paths – and roads – into clean energy generators.
John Danilovich, secretary general of the International Chamber of Commerce, says governments need help from the private sector to achieve a deal at the COP21 Climate Change conference in Paris.
COP21 is a very important step towards reversing the effects of environmental damage, says Nancy Pfund, founder and managing partner at DBL Investors.
Not long after the UN announced this year's El Nino could become the "worst ever," one key metric shows just that.
The world's richest 10 percent are responsible for half the planet's carbon emissions according to a new report from Oxfam.
In Africa, one company is looking to change lives by bringing renewable energy to one million homes in Tanzania. How?
Simon Baptist, regional director of Asia at EIU, explains that governments are more likely to address climate change using methods that are in their own interest, such as carbon tax.
Countries were asked to make a climate change pledges based on what they could actually carry out, explained Aradhna Tripati, associate professor at the UCLA department of earth and space sciences.
India's largest and most productive coal fields are also home to the largest collection of some of the longest-burning coal fires in the world.
Millions of people across the East Coast and Midwest shouldn't put the shovels or the umbrellas away just yet.
Beijing's residents have spent much of this week under a dark cloud of pollution, even as their president vowed action on climate change.
More than 180 countries have already made firm commitments to cut carbon emissions, says Barbara Finamore, Asia director of the China program at the Natural Resources Defense Council.
Representatives from countries around the world gather in Paris this week to set carbon emissions targets they hope will reduce climate change.
Michel Jarraud, secretary-general of the World Meteorological Organization, warns about the dangers of climate change and the urgent need to act.
The next US president will decide climate policy, not Paris negotiators, says Terry Tamminen. Here's how the candidates stack up on the issue.
CNBC's Steve Sedgwick reports on President Obama's comments on climate change and fighting terrorism.
President Obama says the world needs to tackle climate change now, as it's something that affects everything.
Climate change poses a greater financial risk than entitlement programs, says Peter Orszag, ex-Obama budget director.