Science Scoops: Scientists Turn Down the Heat
by Stephen James O'Meara
Are you someone who likes to blame the oil and gas industries for global warming? Well, sit down, because you may not like this new, albeit controversial, news.
According to a report in New Scientist magazine, “oil and gas will run out too fast for doomsday global warming scenarios to materialize.”
In other words, all of Earth's oil and gas reserves will be burned before there is enough carbon dioxide in the atmosphere to cause the most horrific scenarios envisioned by global warming proponents — namely scorching temperatures and melting polar caps.
In fact, geologists Kjell Aleklett, Anders Sivertsson, and Colin Campbell (Uppsala University in Uppsala, Sweden) predict that Earth's oil supplies could be fully consumed as early as 2010; and our gas supplies, they say, will evaporate shortly after that.
But Nebojsa Nakicenovic, an energy economist at the University of Vienna in Austria, believes that the Swedish geologists are being too conservative in their estimates of Earth's gas and oil supplies. Not only that, he warns, but “there's a huge amount of coal underground that could be exploited.”
Burning coal would be worse for the environment than burning oil or gas. Coal produces more CO2 for each unit of energy, as well as releases large amounts of particulates into the atmosphere. If we do ultimately replace oil and gas with coal, Aleklett admits that the global warming doomsday scenarios would come true. Switching from oil to coal, he says, would be disastrous.
- Why do some scientists think that using oil and natural gas might not cause as much damage as originally thought?
[anno: Some scientists believe that the supplies of oil and natural gas will be used up before they can contribute enough carbon dioxide to the atmosphere to cause severe global warming problems.]
- Use of what other kind of fuel would contribute to global warming?
- What do you think could be done to help keep carbon dioxide out of the atmosphere?
[anno: Answers will vary. Possible answers could include that people should reduce the amount of fossil fuels that they use by using alternative energy sources, such as solar and wind energy, in place of some of the fossil fuels.]