American Museum of Natural History’s Director of the Hayden Planetarium, Neil deGrasse Tyson, hosted “Life the Universe and Everything: A Conversation with Neil deGrasse Tyson” at the Museum on June 2, 2010 Watch full
In 1542, the Spanish Conquistador, Francisco de Orellana ventured along the Rio Negro, one of the Amazon Basin’s great rivers. Hunting a hidden city of gold, his expedition found a network of farms, villages and even huge walled cities. At least that is what he told an eager audience on his return to Spain. http://www.bbc.co.uk/science/horizon/2002/eldorado.shtml…
2010: In an explosive clip from the BBC’s landmark series, scientists drill into a frozen lake to ignite methane gas that is trapped in bubbles beneath the surface. Do greenhouse gases pose a significant threat to our planet? Dr Iain Stewart assesses the dangers.
Runaway climate change Wikipedia: Runaway climate change describes a scenario in which the climate system passes a threshold or tipping point, after which internal positive feedback effects cause the climate to continue changing, even absent further external forcings. The runaway climate change continues until the feedback effects run out, possibly at a new climate state. The phrase “runaway climate change” is used to describe…
2009, Dr Iain Stewart traces the history of climate change Notice: This video has been blocked by the BBC
2009, Dr Iain Stewart traces the history of climate change Notice: This video has been blocked by the BBC
2009, Dr Iain Stewart traces the history of climate change Notice: This video has been blocked by the BBC
See Part One here YouTube One of the most confusing effects of climate change is the increasing incidence of weather extremes, that may include hot, AND cold, snow and rain, wet and dry, drought and flood. Scientists have been examining this problem intensely over recent years, as Europe, America, and Asia have all been subject…
Bill McGuire, author of ‘Waking the Giant: How a changing climate triggers earthquakes, tsunamis, and volcanoes‘, discusses the topics raised in his book. Twenty thousand years ago our planet was an icehouse. Temperatures were down six degrees; ice sheets kilometres thick buried much of Europe and North America and sea levels were 130m lower. The…