3 tuna underwater
The Predator Conservation Network is dedicated to revealing the importance of predators and dispelling myths about these important species. Predators and Ecosystems Predators can have a stabilizing effect on an ecosystem, a characteristics of a healthy ecosystem. A modeling study by the Conservation Science Institute found that large sharks in the North Pacific Ocean create a more stable system. However, if the sharks are removed...
Fly Geyser, United States (Jmtenne/Flickr)
Although science can explain almost everything that happens on this planet, that doesn't mean there isn't room for a little mystery, as well.Some places are just so permeated by intrigue that there is no explaining it away. Below are just a handful of the most mysterious places on Earth.10. Caño Cristales, ColumbiaCano Cristales Columbia (DanteBW/deviantart)Caño Cristales is a river...
Exxon Valdez oil spill cleanup
About once every decade there is a major oil spill somewhere in the world – the Exxon Valdez in 1989, the Prestige in 2002, and the Deepwater Horizon in 2010 all come to mind. These spills can do tremendous damage to the ecosystem in the area of the spill and can expand over vast regions to affect coastlines and...
Marathon des sables people running through the desert
First of all, just where is the Sahara Desert?Take a peek at northern Africa on a map, and most of what you in fact see is the Sahara. From the Atlantic, north to the Mediterranean, and east to the Red Sea, most of Africa's northern reaches have been swallowed up by the ever-expanding Sahara.Interestingly, "Sahara," in Arabic, means desert....
Black and white image of Javan Tiger
Is the world on the verge of losing the majority of its animals? It might sound absurd, but it’s not as far-fetched as you might think when you consider the earth’s history.In the past 540 million years there have been five mass extinctions. A mass extinction is when more than three-quarters of the world's species become extinct in a...
Jurassic Park Logo in tropical setting
Science has marched - not steadily, but in fits and starts - toward bringing certain species back from extinction. In fact, the term "de-extinction" has now entered our 21st century lexicon. First, let's establish the limits of this endeavor, defined by the half-life of DNA, which stands at 521 years. It turns out that DNA deteriorates at a rather...
Coal worker in Linfen
Millions of global citizens live in areas where toxins shorten lives. Here are perhaps ten of the most polluted cities in the world. The primary pollutant in each city is noted in parentheses: 10. Sumgayit, Azerbaijan (petrochemicals) This is another city that suffered from generations of environmental neglect in the former Soviet Union. The indiscriminate discharge of industrial pollutants into the...