News
Greenland ice cores show ‘clear signature of global warming’
A sharp spike in Greenland temperatures since 1995 showed the giant northern island 2.7 degrees hotter than its 20th-century average, the warmest in more than 1,000 years, according to new ice core data.
Related Knowledge Center: Climate science
State of Play
What began as a theory in the 1890s — that industrial emissions of carbon dioxide could increase global temperatures — had progressed to a scientific fact a century later. Scientists across a range of disciplines are studying the impact of the still-growing concentration of carbon dioxide and other so-called “greenhouse gases” in the atmosphere as they call for industrial and governmental policies to slow, then halt, the warming of the planet.