The profound transformation of a vast wilderness area on the Alaska/Canadian border (Yale e360). All of this is the result of a regional temperature increase of more than 2C in the past fifty years. According to a scientist who has known the area since 1980, “For me, this is a metaphor for what is happening in the rest of the world.”
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A new study about the link between climate change and extreme weather events, reviewed by the Washington Post. The study basically adds confirmation to the understanding that climate change has an important influence on both frequency and intensity, even though some extreme events could happen anyway. Scientists are getting better at figuring out how much climate change adds to the severity of almost any given event.
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A new way of calculating potential sea level rise adds to the usual estimates for amount of expected increase. The method makes use of robust statistical techniques rather than the more common reliance on subjective expert judgments. If the pace of warming remains high, “It might be an unlikely scenario, but we can’t exclude the possibility of global sea levels rising by more than three metres by the year 2100.”
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Higher efficiency for silicon solar cells is closer to reality. It can be accomplished by simple and inexpensive improvements in the fabrication process needed for the type of design that best captures the most energy. The target is now just under 26% for silicon.
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Another reason for why the cost of producing solar energy is falling so fast. It is not just about the efficiency of cells. A lot of engineering is involved in proper location and development of the collection site. The learning experience gained in the last ten years is now showing results that lower many kinds of costs while ensuring reliable operations. SunPower, an American company, is one of the world’s leaders in this specialty and the subject of this story.
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A new study shows why threats of extinction can easily be underestimated. The actual range of a species, in terms of specific areas that are suitable for habitation, is often much lower than what is revealed in their charts. Increases in habitat fragmentation by humans compound the risks.
Carl