News tagged with northern hemisphere

Earth's last warm phase exposed

Analysis of data collected from ice cores and marine sediment cores in both polar regions has given scientists a clearer picture of how the Earth's climate changed during the last Interglacial period. This ...

May 02, 2014
4.7 / 5 (15) 1

Landing site for Rosetta going South

Scientists have determined that ESA's Rosetta mission needs to deliver its lander to a site in the southern hemisphere of comet 67P/Churyumov-Gerasimenko. A site in this region will be the safest and most ...

Sep 27, 2010
4.5 / 5 (4) 0 | with audio podcast

Cold snap in the tropics

Tropical glaciers have responded to episodes of cooling in Greenland and the Antarctic over the past 20,000 years, according to a study carried out mainly by researchers at the CNRS, Université Joseph Fourier, ...

Aug 25, 2014
4.7 / 5 (3) 0

Atmospheric carbon levels nearing historic threshold

(Phys.org) —For the first time in human history, concentrations of the greenhouse gas carbon dioxide (CO2) could rise above 400 parts per million (ppm) for sustained lengths of time throughout much of the Northern Hemisphere ...

Apr 24, 2013
3.9 / 5 (28) 52

Saturn's north polar hexagon

(Phys.org)—Saturn's north polar hexagon basks in the Sun's light now that spring has come to the northern hemisphere. Many smaller storms dot the north polar region and Saturn's signature rings, which appear ...

Feb 26, 2013
5 / 5 (6) 7

Climate change threatens permafrost in soil

In the coming century, permafrost in polar regions and alpine forests in the Northern Hemisphere may thaw rapidly, potentially releasing carbon and nitrogen that could cause additional regional warming. Permafrost occurs ...

Sep 20, 2012
4.2 / 5 (5) 2