Glaciers are melting, sea levels are rising, cloud forests are drying, and wildlife is scrambling to keep pace. It's becoming clear that humans have caused most of the past century's warming by releasing heat-trapping gases as we power our modern lives. Called greenhouse gases, their levels are higher now than in the last 650,000 years.
We call the result global warming, but it is causing a set of changes to the Earth's climate, or long-term weather patterns, that varies from place to place. As the Earth spins each day, the new heat swirls with it, picking up moisture over the oceans, rising here, settling there. It's changing the rhythms of climate that all living things have come to rely upon.
What will we do to slow this warming? How will we cope with the changes we've already set into motion? While we struggle to figure it all out, the face of the Earth as we know it—coasts, forests, farms and snow-capped mountains—hangs in the balance.
The "greenhouse effect" is the warming that happens when certain gases in Earth's atmosphere trap heat. These gases let in light but keep heat from escaping, like the glass walls of a greenhouse.
First, sunlight shines onto the Earth's surface, where it is absorbed and then radiates back into the atmosphere as heat. In the atmosphere, “greenhouse” gases trap some of this heat, and the rest escapes into space. The more greenhouse gases are in the atmosphere, the more heat gets trapped.
Scientists have known about the greenhouse effect since 1824, when Joseph Fourier calculated that the Earth would be much colder if it had no atmosphere. This greenhouse effect is what keeps the Earth's climate livable. Without it, the Earth's surface would be an average of about 60 degrees Fahrenheit cooler. In 1895, the Swedish chemist Svante Arrhenius discovered that humans could enhance the greenhouse effect by making carbon dioxide, a greenhouse gas. He kicked off 100 years of climate research that has given us a sophisticated understanding of global warming.
Levels of greenhouse gases (GHGs) have gone up and down over the Earth's history, but they have been fairly constant for the past few thousand years. Global average temperatures have stayed fairly constant over that time as well, until recently. Through the burning of fossil fuels and other GHG emissions, humans are enhancing the greenhouse effect and warming Earth.
Scientists often use the term "climate change" instead of global warming. This is because as the Earth's average temperature climbs, winds and ocean currents move heat around the globe in ways that can cool some areas, warm others, and change the amount of rain and snow falling. As a result, the climate changes differently in different areas.
27 million in fines and 200 million more on the way ? Every fisherman in Virginia West Virginia and Kentucky
Will be eating toxic fish for decades. They strip mine mountains. That means knocking the top off the mountain. Turning it into a flat top. Then they dump the rocks in the streams. Heavy metals such as mercury leach out. Into the streams and water supply. Thousands get cancer. This is a toxic time bomb.
We endured your BS. Therefore global warming theorists are more intelligent than idiots who deny global climate change.
It may save Obamacare to shrink hog butts. Their food selections should be monitored by NSA spies. RFID chips to be placed in high fat junk food boxes. A fat alarm will sound at checkout. MIB will surround the lard butts. Men in black will shuffle the lard butts to a WW Meeting.
With food stamp cutbacks, even Walmart is pinched. Half the people in the USA are on food stamps. They cut back on eating due to food stamp cuts. Big fat blimps will still show up if the doctor sends them.
The Dow comes back, but copper sinks. No such thing as an economic recovery without stronger copper and industrial metals. If commodities like coal and copper are sinking now, when will they rise ? Until they rise, coal stocks will flounder lower.
Coal is in the doghouse. There is more coal than buyers. And it's a dirty dog.
Yep. I know somebody who lost 100 lbs and kept it off 15 years. This is a social club. If you learn the plan,
you can shed heavy blubber.
Is 4 the floor or will it drop more ?
IMHO coal is still in a dirty doghouse. Very demoralizing for bag-holders. Deniers of pollution and climate change will be tortured with sinking coal prices. Solar makes sense.
Bloom Boxes are the next generation residential electric generators. Bloom energy makes fuel cells that generate electricity. Coal is a dinosaur sinking in the La Brea tar pits. Every dinosaur bounce sinks it deeper.