Could these controversial technological fixes buy earth some time?
Climate change is making winters colder despite rising temperatures and hotter summers. Here’s why.A giant parasol that hovers high in orbit to block the sun. Refreezing the melting poles by making submarine-sized ice cubes. Pumping extra carbon dioxide deep underground for indefinite storage. Spraying sulfur dioxide into the atmosphere to form clouds to artificially cool the Earth.
We don't have much time, said Hugh Hunt, an engineering professor at Cambridge University in England, where he directs the Center for Climate Repair. He compares geoengineering to the often harsh and sometimes dangerous chemotherapy used to treat cancer. As wacky as some of these ideas might sound, they may turn out to be just as serious as the problem humankind now faces. Below are some planet-saving ideas being discussed by global scientists, along with their pros and cons.The idea: Sucking carbon dioxide out of the atmosphere
Spraying sulfur dioxide into the atmosphere could form clouds that would artificially cool the earth by reflecting solar radiation away from the planet.that actually has made the only recent dent in global warming's rise in the last few decades — the 1991 eruption of Mount Pinatubo in the Philippines, which blasted more than 15 million tons of sulfur dioxide 21 miles high.
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