Rate This Topic

Average: 0/5

Recent Comments

Greg Osmond
May 10, 2013 09:05PM

I was watching two Minke whales for one hour today near my home in Woody Point, ...
Melvin Lusterio
May 09, 2013 08:05PM

The Good Force be with you! Well done, Team Curiosity! Keep it up! Live fo...
shaymaa elgbaly
May 09, 2013 01:05AM

amazing !
C Michael Hogan
May 08, 2013 09:05PM

Documentation on the Seine barges in the 17th century is scant, but apparently m...

Ancient

Ancient

Indirect methods (proxy measures) indicate that Earth's average temperature has varied many times as much as 10°C in concert with changes in atmospheric concentrations of greenhouse gases.

Depiction of the asteroid that struck Earth 65 million years ago near the Yucatan Peninsula.

Don Davis, NASA

 Snowball Earth

 Thermal Maximums

 Cataclysmic Events

 

Recently Updated
The Late Paleozoic: Responding to Catastrophe Last Updated on 2012-08-22 at 14:54 Every major catastrophe seems to provide opportunities for new biological life forms. So it was with the Ordovician–Silurian Extinction. Up to that point, life had been... More »
The Age of the Dinosaurs Last Updated on 2012-08-22 at 14:54 Reptiles occupied the void left by the Great Dying and dominated animal life from 251 megayears (Ma) to 66 Ma (one megayear = one million years ago), an era known as the... More »
Milankovitch cycles Last Updated on 2012-08-01 at 12:53 Milankovitch cycles refer to long term variations in the orbit of the Earth which result in changes in climate over periods hundred of thousands of years and are related... More »
Glacier Last Updated on 2012-07-16 at 21:16 Introduction to Glaciation     Various types of paleoclimatic evidence suggest that the climate of the Earth has varied over time.... More »
Antarctic Ice: An 800,000 Year Record of Climate Change Last Updated on 2012-05-29 at 11:25 Antarctic Ice: An 800,000 Year Record of Climate Change provides an extraordinary opportunity for scientists to reconstruct climate events of the past. Scientists have recently... More »
Ancient Earth: The First Three Billion Years Last Updated on 2012-05-20 at 12:54 The Big Bang, the single point in space and time from which all matter and energy in the universe supposedly emanated, is thought to have occurred sometime around 13.7 Ga... More »
  • Articles Articles
  • Blog Blog Posts
  • Gallery Galleries
  • News News
  • Resources Resources
  • Media Videos
  • Include Content from all Sub-Sections
Type Title Author Date
Retrieving data...