Related topics: earth

EXPLAINER: Why Haiti is prone to devastating earthquakes

Earthquakes have been wreaking havoc in Haiti since at least the 18th century, when the city of Port-au-Prince was destroyed twice in 19 years. Saturday's powerful quake killed hundreds and injured thousands more. Eleven ...

Slow slips offer insights into earthquakes

Significant earthquakes, from gentle shaking to devastating tremors, are hazards caused by a sudden release of stress that has built up in geological faults. More subtle events called slow slips are attracting increasing ...

Early Earth was bombarded by series of city-sized asteroids

Scientists know that the Earth was bombarded by huge impactors in distant time, but a new analysis suggests that the number of these impacts may have been 10 times higher than previously thought. This translates into a barrage ...

'Pack ice' tectonics reveal Venus' geological secrets

A new analysis of Venus' surface shows evidence of tectonic motion in the form of crustal blocks that have jostled against each other like broken chunks of pack ice. The movement of these blocks could indicate that Venus ...

Extreme greenhouse effect heated up the young Earth

Very high atmospheric CO2 levels can explain the high temperatures on the still young Earth three to four billion years ago. At the time, our Sun shone with only 70 to 80 percent of its present intensity. Nevertheless, the ...

Geological riddle solved: 'Roof of the World' has gotten higher

There has long been controversy about whether the world's highest region, Tibet, has grown taller during the recent geological past. New results from the University of Copenhagen indicate that the 'Roof of the World' appears ...

page 19 from 40