News tagged with northern hemisphere

Northern conifers youngest of the species

Dramatic shifts in the planet's climate and geography over millions of years changed the course of evolutionary history for conifer trees, according to a Yale paper in the Proceedings of the National Academy of Sciences.

Oct 04, 2012
5 / 5 (1) 0 | with audio podcast

Scientist turn focus to Titan

(Phys.org)—Humanity has landed a rover on Mars. Now, say scientists, it's time to land a boat on Titan. This outlandish scenario could become reality, according to engineers presenting their proposals at ...

Sep 28, 2012
4.9 / 5 (8) 0

Record Arctic ice low drives urgent global action

Today's announcement of a record low for Arctic sea ice extent shows the need for urgent local and global actions, say WWF experts. According to satellite monitoring, the low of 3.41 million square kilome ...

Sep 20, 2012
3.8 / 5 (4) 89

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

Vesta in Dawn's rear view mirror

(Phys.org)—NASA's Dawn mission is releasing two parting views of the giant asteroid Vesta, using images that were among the last taken by the spacecraft as it departed its companion for the last year.

Sep 11, 2012
4 / 5 (2) 3 | with audio podcast