The lesson plan provides a full menu for use from primary school to high school. Depending on the grade level and the unit of study that provides the context for a...
BiodiversityLast Updated on 2014-09-15 23:53:05
The word "biodiversity" is a contracted version of "biological diversity". The Convention on Biological Diversity defines biodiversity as:"the variability among living organisms from all sources including, inter alia, terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are a part; this includes diversity within species, between species, and of ecosystems."
Thus, biodiversity includes genetic variation within species, the variety of species in an area, and the variety of habitat types within a landscape. Perhaps inevitably, such an all-encompassing definition, together with the strong emotive power of the concept, has led to somewhat cavalier use of the term biodiversity, in extreme cases to refer to life or biology itself. But biodiversity properly refers to the variety of living... More »
“Extinct” Snail Found Alive—But for How Long?Last Updated on 2014-09-15 11:10:09Scientists are, well, tickled pink to rediscover a rosy-colored snail once deemed extinct in the Seychelles.
A little over a century ago, it was easy to spot the colorful shells of the Aldabra banded snail (Rhachistia aldabrae). The mollusk was the most common snail species on Aldabra Atoll, a coralisland in the Indian Ocean that’s part of the Seychelles but is located closer to Madagascar. Click here to read more
Kashmir monsoon floods leave 460 dead and displace almost a millionLast Updated on 2014-09-12 11:25:32Authorities in Pakistan and India are struggling to cope with raging monsoon floods which have killed more than 460 people, displaced nearly a million people, and still threaten many more.
Pakistani military specialists blew up dykes with explosives to divert water from rivers running close to three cities, while Indian authorities admitted that relief efforts had not yet reached about 300,000 people in Kashmir. Click here to read more.
Website : IPCC report says humans almost certainly cause global warmingLast Updated on 2014-09-09 10:30:45A panel of the world’s leading climate scientists strongly asserted Friday that “it is extremely likely that human influence has been the dominant cause” of global warming since 1950 and warned of more rapid ice melt and rising seas if governments do not aggressively act to reduce the pace of greenhouse gas emissions.
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More Than Half Of U.S. Bird Species Threatened By Climate ChangeLast Updated on 2014-09-09 10:21:02People in Maryland love their Baltimore orioles — so much so that their Major League Baseball team bears the name of the migrating bird. Yet, by 2080, there may not be any orioles left in Maryland. They migrate each year and, according to a new report, could soon be forced to nest well north of the Mid-Atlantic state.
And the oriole is not alone. A seven-year study published Tuesday by the National Audubon Society warns that the migratory routes and habitats of more than half of the birds in North America are now or soon will be threatened by climate change.
The report looked at more than 40 years of climate data and records from bird censuses conducted by the Audubon and the U.S. Geological Survey. Researchers compared changes in bird migration patterns to changes in climate to predict the fate of 588 bird species now found in the U.S. and Canada. Click here to read... More »
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