Geology

A potentially dangerous level of carbon dioxide and methane gas haunts Lake Kivu, the freshwater lake system bordering Rwanda and the Republic of Congo.

Scientists can't say for sure if the volatile mixture at the bottom of the lake will remain still for another 1,000 years or someday explode without warning. In a region prone to volcanic and seismic activity, the fragility of Lake Kivu is a serious matter. Compounding the precarious situation is the presence of approximately 2 million people, many of them refugees, living along the north end of the lake.

Satellite observations and a state-of-the art regional atmospheric model have independently confirmed that the Greenland ice sheet is loosing mass at an accelerating rate, according to a new study published in Science.

The mass loss is equally distributed between increased iceberg production, driven by acceleration of Greenland's fast-flowing outlet glaciers, and increased melt water production at the ice sheet surface. Recent warm summers further accelerated the mass loss to 273 Gt per year (1 Gt is the mass of 1 cubic kilometer of water), in the period 2006-2008, which represents 0.75 mm of global sea level rise per year.

Back in 2005, when a massive 35-mile-long rift broke open in the Ethiopia desert some geologists controversially claimed that a new ocean was forming as two parts of the African continent pulled apart.

Currently, scientists from several countries have supposedly confirmed that the volcanic processes at work beneath the Ethiopian rift are nearly identical to those at the bottom of the world's oceans, and the rift may likely be the beginning of a new sea.

If you're a child of the 1970s you remember peak oil - it was a book that claimed by 1992 we were going to reach maximum capacity and then it would gradually become more scarce.   If you're a fan of science fiction, it meant a world where oil was worth more than gold and we machine guns on cars to fight over stuff.  More likely we would come up with an alternative, but not before government lobbyists got subsidies for things we know won't work.

Peak oil hasn't happened yet but it's still being discussed.   Like that guy on the corner yelling the end of the world is near, he will eventually be right and so will the peak oil crowd - it makes sense since there were a limited number of dinosaurs that died to create oil while we have more people than ever buying Hummers.  

Dating can be a difficult task, a daunting challenge for men and women the world over. It becomes especially difficult when what you're trying to date is extremely ancient.

I'm not talking about romantic dates with seniors though, I don't have many tips there I'm afraid, although good personal hygiene and being a good listener will probably count in your favour.

Should you use sand for stream restoration?    Common wisdom said no, because it disrupts salmon spawning, researchers have successfully built and maintained a scale model of a living meandering gravel-bed river in the lab and found that sand is indispensable for helping to build point bars and to block off cut-off channels and chutes--tributaries that might start and detract from the flow and health of the stream.

The significance of vegetation for slowing erosion and reinforcing banks has been known for a long time, but this is the first time it has been scientifically demonstrated as a critical component in meandering.

Committees and organizations usually start for the right reasons but over time they need to become self-perpetuating.

The International Commission on Stratigraphy (ICS) has managed to milk entire decades out of deciding the boundary dates for the Quaternary Age, which covers both the ice age and moment early man first started to use tools, and it seems they have finally voted on an answer.  

Voting in science?   Indeed, they have formally agreed to move the boundary dates for the prehistoric Quaternary age by 800,000 years, reports the Journal of Quaternary Science. 

Some scientists believe that Mars is red due to rocks being rusted by water that once flooded the planet.

That is not the case, say recent laboratory studies which show that red dust may be formed by ongoing grinding of surface rocks and liquid water need not have played any significant role in the formation process.  The data were presented at the European Planetary Science Congress by Dr Jonathan Merrison.

An international team of scientists has not only verified the existence of a mountain range that is suspected to have caused the massive East Antarctic Ice Sheet to form, but also has created a detailed picture of the rugged landscape buried under more than four kilometers (2.5 miles) of ice.