NASA’s telescope on DSCOVR snapped a solar eclipse over South America in February
Al Gore didn’t really claim to invent the Internet in 1999, but he did champion a NASA mission that installed a deep space webcam pointed at Earth in 2015. And yesterday President Trump put a bullseye on that mission. Or, rather, on part of it. Trump’s 2018 budget blueprint asks Congress to defund the Earth-facing instruments on the Deep Space Climate Observatory (DSCOVR). Its sensors tracking magnetic storms emanating from the Sun would keep doing their jobs.
Selectively deep-sixing well-functioning instruments on a satellite 1.5 million kilometers from Earth is one of the stranger entries in President Trump’s first pass at a budget request. But it fits a pattern: Throughout the document programs aimed at comprehending or addressing climate change take deep cuts, even where there is no obvious fiscal justification. Continue reading →
Human error plays a role in 94% of U.S. traffic fatalities. Image: William Murphy via Flickr
Robotic cars are great at monitoring other cars, and they’re getting better at noticing pedestrians, squirrels, and birds. The main challenge, though, is posed by the lightest, quietest, swerviest vehicles on the road.
Nuno Vasconcelos, a visual computing expert at the University of California, San Diego, says bikes pose a complex detection problem because they are relatively small, fast and heterogenous. “A car is basically a big block of stuff. A bicycle has much less mass and also there can be more variation in appearance — there are more shapes and colors and people hang stuff on them.”
That’s why the detection rate for cars has outstripped that for bicycles in recent years. Most of the improvement has come from techniques whereby systems train themselves by studying thousands of images in which known objects are labeled. One reason for this is that most of the training has concentrated on images featuring cars, with far fewer bikes. Continue reading →
The victory of climate change-denying Republican candidate Donald Trump was one of two big setbacks for U.S. climate policy earlier this month. The other was the resounding defeat of Washington State’s Initiative 732, which sought to prove that using fees on carbon emissions to cut existing taxes could provide bipartisan appeal for what economists consider to be the most efficient mechanism to cut greenhouse gas emissions: carbon taxes.
Washington State rejected the idea of a carbon tax by 59 percent to 41. In sharp contrast, just across the world’s longest border, carbon taxes are attracting politically diverse support. Four-fifths of Canadians will live in provinces with such taxes in 2017, and in 2018 all Canadians could be paying a carbon tax…
A few caveats and details left on the cutting room floor:
The carbon trading scheme operated by California, Quebec and Ontario has a rising floor price for credits, currently set at roughly C$15, that makes it act like a carbon tax at times (like now) of soft demand for tradable credits.
These states and provinces are — like carbon tax innovator British Columbia — coupling their carbon pricing schemes with regulations such as restrictions on coal-fired power that drive more reductions and do so at lower political risk. For more on this (and more) see my carbon pricing explainer in Ensia from this summer.
Canada’s promised emissions reduction for 2030 fails, like most national commitments made at last year’s Paris climate talks, to put global emissions on a trajectory to meet the Paris Agreement’s fundamental goal: holding global warming to well below 2 degrees C.
President-elect Donald Trump is a self-declared climate-change denier who, on the campaign trail, criticized solar power as “very, very expensive” and said wind power was bad for the environment because it was “killing all the eagles.” He also vowed to eliminate all federal action on climate change, including the Clean Power Plan, President Obama’s emissions reduction program for the power sector.
So how will renewable-energy businesses fare under the new regime?
Trump’s rhetoric has had renewable-energy stocks gyrating since the election. But the impact could be far less drastic than many worst-case scenarios. “At the end of the day what Trump says and what is actually implemented are two completely different things,” says Yuan-Sheng Yu, an energy analyst with Lux Research …
Synthetic inertia is achieved by reprogramming power inverters attached to wind turbines so that they emulate the behavior of synchronized spinning masses.
Montréal-based Hydro-Québec TransÉnergie, which was the first grid operator to mandate this capability from wind farms, will be sharing some of its first data on how Québec’s grid is responding to disruptive events such as powerline and power plant outages. “We have had a couple of events quite recently and have been able to see how much the inertia from the wind power plants was working,” says Noël Aubut, professional engineer for transmission system planning at Hydro-Québec. Continue reading →
Simulated satellite image of methane plume from French Guyana’s Petit Saut hydroelectric power plant. Image: GHGSat
Attention greenhouse gas emitters: There’s a new eye in the sky that will soon be photographing your carbon footprint and selling the images to any and all. It’s a micro-satellite dubbed “Claire” (clear, bright, and clean in French) by its Montreal-based developer, GHGSat.
This microwave-oven-sized pollution paparazzo rocketed to a 512-kilometer-high orbit in mid-June care of the Indian Space Agency, with a mission to remotely measure the plumes of carbon dioxide and methane wafting up from myriad sources on Earth’s surface. Claire’s targets include power plants, natural gas fracking fields, rice paddies, and much more—just about any emissions source that someone with a checkbook (corporations, regulators, activists) wants tracked, according to GHGSat president Stéphane Germain. Continue reading →
Villages brightened from 2001 (L) to 2011 (R). Images: Burlig & Preonas / NOAA
Electrification is associated with a seemingly endless list of social and economic goods. Nations that use more power tend to have increased income levels and educational attainment and lower risk of infant mortality, to name but a few. So I was baffled to stumble across a pair of economic analyses on electrification in India and Kenya, posted last month, that cast serious doubt on what has long assumed to be a causal link between the glow of electricity and rural development.
“It is difficult to find evidence in the data that electrification is dramatically transforming rural India,” concludes Fiona Burlig, a fourth-year UC Berkeley doctoral student in agricultural and resource economics who coauthored the India study. “In the medium term, rural electrification just doesn’t appear to be a silver bullet for development.” Continue reading →