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Tag: emissions

Air pollution: How does London’s new emissions zone compare?

Air pollution: How does London’s new emissions zone compare?

Science
Media playback is unsupported on your device London's tough new Ultra Low Emissions Zone (ULEZ) is the latest - and one of the strongest - steps yet taken to limit emissions of pollutants from cars, vans and trucks. So how does it compare with other cities in Europe and the rest of the world?CAZ? LEZ? ULEZ? What do they all mean?These are all different ways of describing geographical areas of cities or towns that have placed restrictions on the use of vehicles, with the goal of tackling air pollution. A CAZ is a clean air zone, a LEZ is a low-emissions zone. Now we have London with the world's first ULEZ, or ultra-low emissions zone. In the UK, CAZs are areas that can decide to use charging as a means of cle...
Climate change: Pledge to cut emissions from dairy farms

Climate change: Pledge to cut emissions from dairy farms

Science
A dairy firm is pledging to make its operations carbon-neutral from cow to supermarket by 2050, including more than 2,000 farms in the UK. This will require "radical changes" over the coming decades, including developing new technologies, the dairy co-operative, Arla Foods, said.It admitted the target was "ambitious", but said it was achievable.However, the Vegan Society said there was no way to make dairy a climate-friendly product.Gases which help to heat the atmosphere and contribute to climate change are a by-product of the dairy industry. They include direct emissions of methane, a potent greenhouse gas, from cows, and carbon dioxide and nitrous oxide from the likes of packaging, transportation and fertilisers. Arla, the lar...
Climate change: Which airline is best for carbon emissions?

Climate change: Which airline is best for carbon emissions?

Science
EasyJet has come top of the league for airlines trying to cut carbon emissions to tackle climate change.A report suggests that by 2020 its emissions per passenger kilometre will be less than half that of some rivals.The firm's performance is partly down to its modern, efficient fleet and its push to fill every seat.Companies named as having the weakest plans to cut emissions are Air China; China Southern; Korean Air; Singapore Airlines and Turkish Airlines.EasyJet's aircraft are expected to be emitting 75g of CO2 per passenger km by 2020, compared with 172g for Korean Air.International Airlines Group (IAG), which includes British Airways, is expected to emit 112g. The industry has volunteered to freeze its overall emissions by 2020, and halve emissions by...
Early spring rains bring rise in methane emissions across Alaska

Early spring rains bring rise in methane emissions across Alaska

Science
Feb. 4 (UPI) -- Analysis of a bog in Alaska suggests early spring rains cause permafrost to thaw and boosts methane emissions. According to observations made by researchers at the University of Washington, a 2016 spike in early spring rainfall caused permafrost to melt three weeks earlier than usual. As a result, plants began growing and methane-producing microbes proliferated. The head start resulted in a 30 percent increase in methane released by the bog during 2016. "Early rainfall sent a slog of warm water moving into our bog," Rebecca Neumann, an associate professor of environmental engineering, said in a news release. "We believe microbes in the bog got excited because they were warmed up, so they released nutrients from the soil that allowed more plant growth. Methane production an...
Report: US 2018 CO2 emissions saw biggest spike in years

Report: US 2018 CO2 emissions saw biggest spike in years

Science
Media playback is unsupported on your device A new report has found that US carbon dioxide emissions rose by 3.4% in 2018 after three years of decline.The spike is the largest in eight years, according to Rhodium Group, an independent economic research firm.The data shows the US is unlikely to meet its pledge to reduce emissions by 2025 under the Paris climate agreement.Under President Donald Trump, the US is set to leave the Paris accord in 2020 while his administration has ended many existing environmental protections.While the Rhodium report notes these figures - pulled from US Energy Information Administration data and other sources - are estimates, The Global Carbon Project, another research group, also reported a similar increase in US ...