Environmental

Recent Posts

Blue twilight may trigger spawning synchrony of corals
Posted on 23 Apr 2011 by Thomas H. Clarke, Jr.

Corals are well known mass spawners. Many corals manage to emit eggs and sperm into water on the same evenings of the year; some coordinate the releases to within 20 minutes of each other, even though miles apart. Researchers have noted that on nights... Read More

More life everywhere, now in great diversity at 2.3 miles below the ocean surface
Posted on 30 Aug 2010 by Thomas H. Clarke, Jr.

As noted in prior posts, life keeps being found in some of the most unexpected places. A recent study off Indonesia found nearly 40 new species in just one week of exploration at a depth of 3,700 meters. Among the finds, distinctive corals, crabs, sea... Read More

For the first time, multicellular creatures have been found to live in an oxygen-free environment
Posted on 31 May 2010 by Thomas H. Clarke, Jr.

The diversity of life on Earth is sometimes amazing to behold. Until recently biologists have assumed, based on existing evidence, that only one-celled organisms such as bacteria were able to survive in oxygen-depleted places. Multicellular animals were... Read More

The foundations of life may have formed in cold environments, not hot or temperant
Posted on 30 Nov 2010 by Thomas H. Clarke, Jr.

The scientific debate over the origins of life have found support for molecular formation and replication in boiling hot deep-sea hydrothermal vents and volcanic hot springs, as well as the warm little ponds postulated by Darwin. Now comes evidence for... Read More

Why did the early Earth not freeze when the Sun was up to 30% fainter?
Posted on 23 Jun 2010 by Thomas H. Clarke, Jr.

Many prior posts have reviewed the evolution of life on Earth, and the conflicting evidence that can be identified regarding when oxygen began to be present in significant quantities in the atmosphere. Be that as it may, one critical question has remained... Read More