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How Bird Flocks Work
March 28, 2013 04:10 PM - Andy Soos, ENN
Flocks of birds and how they seem to move together have always fascinated any observer of them. New research from the Universities of Exeter and Cambridge reveals for the first time that, contrary to current models used to explain the movement of flocks, the differences between bird species and social relationships between individuals play a critical role in determining the dynamics of mixed-species flocks. The unified behavior of bird flocks has puzzled scientists for hundreds of years. One naturalist from the turn of the century even suggested telepathy may be involved. There have since been less esoteric explanations, including mathematical models that show that repeated interactions among individuals following simple rules can generate coordinated group movements. However, these models usually rely on the assumption that individuals within groups are identical and interact independently, which may not reflect reality.
Wildfires are both a devastating and essential part of the ecosystem.Remember.... Only You Can Prevent Forest Fires.
Kelly Vaghenas for Green Prophet reports on 13 surprising green ways to reuse tea bags.
As an avid tea drinker, I was intrigued when I stumbled upon a variety of sources that promoted the eco-friendly use of tea bags, outside the teacup. Arthur W. Pinero, an Englishman, of course, said, “Where there’s tea, there’s hope.” That’s definitely true. Brewed tea bags can provide a pick-me-up in ways you’d least expect. Here are 13 of them. You can use tea…
What are you doing at 8:30 pm on March 23rd? Are you doing something cliché like going out for a nice dinner and a movie? Instead, how about joining millions of people from around the world by participating in Earth Hour, an event where you shut off your lights to express your concern for the [...]