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 comparatively warm ...

dateMay 02, 2014 in Earth Sciences
shares0 comments 1

New storms on Jupiter look like Mickey Mouse

We told you this was going to be a good season to observe Jupiter, and astrophotographers in the northern hemisphere have been making the most of this time of opposition where Jupiter has been riding high in the sky. What ...

dateMar 26, 2014 in Space Exploration
shares0 comments 2

When the Sahara turned to sand

The Sahara wasn't always a desert. Trees and grasslands dominated the landscape from roughly 10,000 years ago to 5,000 years ago. Then, abruptly, the climate changed, and north Africa began to dry out.

dateNov 11, 2013 in Earth Sciences
shares0 comments 4

Tackling an Ice Age mystery

In the northern hemisphere, ice sheets ebb and flow in 100,000-year cycles, driven by varying amounts of sunlight falling on Earth's surface as its orbit and orientation toward the sun changes. But astronomical variations ...

dateSep 05, 2013 in Earth Sciences
shares0 comments 0