Stories tagged green house

Apr
22
2013

Tall order: Scientists are cloning giant redwood trees from California in an effort to reforest lost trees and combat climate change.
Tall order: Scientists are cloning giant redwood trees from California in an effort to reforest lost trees and combat climate change.Courtesy Victorgrigas
Start talking about giant cloning projects, and the conversation is going to quickly turn to Jurassic Park, the film that "what iffed" the cloning of dinosaurs. It was all for fun, if beyond hypothetical.

But giants of another kind, trees, are being cloned in an effort to help turn the balance of deteriorating conditions here on Earth. California's iconic, and incredibly tall, redwood trees are getting the cloning treatment. You can read the full details about the project here. And today, Earth Day 2013, the project is going global as clones of these redwoods are being planted in Australia, New Zealand, Great Britain, Ireland, Canada, Germany and the U.S.

Why clone just behemoth trees? The guys running the project surmise where better to find the strongest, hardiest genetic codes to withstand the coming climate pressures than in these huge redwoods, many which have lived for over 4,000 years.

The current crop of plantings come from the DNA of giant trees cut down about a century ago. Even though the bulk of the trees are just stumps today, those stumps are very much alive. They have live shoots emerging from the stumps, which the researchers can extract DNA from to serve as the basis for their cloning work.

The new plantings have a long way to go. They're only about 18 inches tall right now. The big challenge, the researchers say, is to find people and resources to nurture this little trees into viable, independent growers.

Redwoods are considered best suited to absorb massive volumes of carbon dioxide, the greenhouse gas primarily responsible for climate change.

What do you think? Is this a good application for cloning? Can these huge trees make a difference with climate change over the long haul? Should we be tinkering around with this kind of science?

Sep
03
2006

California's 25/20 vision: photo from Wikimedia
California's 25/20 vision: photo from Wikimedia

A 25 percent reduction in greenhouse gas emissions by 2020

California seeks to again lead the world toward a better future. After last weeks "one million solar roofs" legislation, this week California politicians are working out details that will reduce their green house emissions 25 per cent by the year 2020.

The legislation will require all businesses, from automakers to cement manufacturers, to reduce emissions beginning as early as 2012 to meet the 2020 cap. The state's 11-member Air Resources Board, which is appointed by the governor, will be charged with developing targets for each industry and for seeing that those targets are met. The board now will embark on a years-long process to fully develop regulations. The board could impose fees on some industries to pay for new programs that could do everything from requiring truckers to use biodiesel fuels to forcing farmers to handle animal waste differently.San Francisco Chronicle

California is the world's 12th-largest emitter of greenhouse gases, responsible for 10 percent of the carbon dioxide produced nationally and 2.5 percent globally. Global scientists agree that to prevent catastrophic temperature increases in this century, greenhouse gas emissions by 2050 would have to be 70 to 80 percent lower than 1990 levels.

Cap emissions; buy and sell emissions credits

Last week Sen. Dianne Feinstein, the state's senior Democratic legislator, pledged at the Commonwealth Club to introduce legislation in January that would place mandatory caps on industrial emissions. She also supports a federal cap-and-trade bill, a market-based approach for lowering emissions.(see Buzz Blog post about buying and selling pollution) For example, it would allow farmers and landowners who plant trees or convert crops into bio-fuels to earn emission credits that could be sold to companies that exceed emission limits.

What will it cost and who will pay

Some predict that because "green" energy is more expensive, many companies will move out of California. Others insist that investment capital and "clean-tech" jobs will result, similar to when California led the way with Silicon Valley. California would become more efficient and self reliant. This could give them a head start in a future that will certainly need to do something about global warming and rising energy costs.