Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
A ‘green’ Sahara was far less dusty than today
#1
R&D

Sat, 04/06/2013

EXCERPT:

As recently as 5,000 years ago, the Sahara—today a vast desert in northern Africa, spanning more than 3.5 million square miles—was a verdant landscape, with sprawling vegetation and numerous lakes. Ancient cave paintings in the region depict hippos in watering holes, and roving herds of elephants and giraffes—a vibrant contrast with today’s barren, inhospitable terrain.

The Sahara’s “green” era, known as the African Humid Period, likely lasted from 11,000 to 5,000 years ago, and is thought to have ended abruptly, with the region drying back into desert within a span of one to two centuries.

Now researchers at Massachusetts Institute of Technology (MIT), Columbia University, and elsewhere have found that this abrupt climate change occurred nearly simultaneously across North Africa.

LINK
It is our attitude toward free thought and free expression that will determine our fate. There must be no limit on the range of temperate discussion, no limits on thought. No subject must be taboo. No censor must preside at our assemblies.

–William O. Douglas, U.S. Supreme Court Justice, 1952
Reply
#2
Not a lot of global dust during global ice age is my layman's guess. When you see what has happened to NH climate this winter due to changes in the jet stream it makes you wonder what climate patterns were like back in 'green Sahara' days.
Environmentalism is based on lies and the lies reflect an agenda that regards humanity as the enemy of the Earth. - Alan Caruba
Reply




Users browsing this thread: 1 Guest(s)