Sustained greenhouse gas emissions could see global sea levels rise nearly 40 centimetres this century as ice sheets in Antarctica and Greenland continue to melt, a major international study concluded Thursday.
Environment
Sep 17, 2020
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630
A research team from Caltech and the UCLA Samueli School of Engineering has demonstrated a promising way to efficiently convert carbon dioxide into ethylene—an important chemical used to produce plastics, solvents, cosmetics ...
Materials Science
Sep 17, 2020
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The concentration of mercury in the fish in Alaska's Yukon River may exceed the EPA's human health criterion by 2050 if greenhouse gas emissions that cause global warming are not constrained, according to scientific research ...
Environment
Sep 16, 2020
0
119
Canadians have understandably been preoccupied by the COVID-19 emergency. Yet the climate emergency that prompted hundreds of thousands to march in the streets in September 2019 has not subsided.
Environment
Sep 14, 2020
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4
For the first time, climate scientists have compiled a continuous, high-fidelity record of variations in Earth's climate extending 66 million years into the past. The record reveals four distinctive climate states, which ...
Earth Sciences
Sep 10, 2020
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Canada's approach to climate change for the past 30 years is simply not working. Greenhouse gas emissions in the year 2018 (the last year for which we have statistics) were almost exactly where they were in the year 2000.
Environment
Sep 10, 2020
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7
The Paris climate agreement seeks to limit global warming to 1.5℃ this century. A new report by the World Meteorological Organization warns this limit may be exceeded by 2024—and the risk is growing.
Environment
Sep 09, 2020
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A team of researchers from Chile, Hungary, and Spain has created a model to show the factors that can result in heat death in multiple species of fruit flies. In their paper published in the journal Science, the group describes ...
In one of the first comprehensive assessments of the fuel economy standards in the United States, Princeton University researchers found that, over their 40-year history, the standards helped reduce reliance on foreign oil ...
Environment
Sep 03, 2020
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2
A new study led by University of Hawai'i at Mānoa researchers, published in the journal Nature Communications this week, revealed that correctly simulating ocean current variations hundreds of feet below the ocean surface—the ...
Earth Sciences
Aug 28, 2020
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Greenhouse gases are gases in an atmosphere that absorb and emit radiation within the thermal infrared range. This process is the fundamental cause of the greenhouse effect. Common greenhouse gases in the Earth's atmosphere include water vapor, carbon dioxide, methane, nitrous oxide, and ozone. In our solar system, the atmospheres of Venus, Mars and Titan also contain gases that cause greenhouse effects. Greenhouse gases greatly affect the temperature of the Earth; without them, Earth's surface would be on average about 33°C (59°F) colder than at present.
Human activities since the start of the industrial era around 1750 have increased the levels of greenhouse gases in the atmosphere. The 2007 assessment report compiled by the IPCC observed that "changes in atmospheric concentrations of greenhouse gases and aerosols, land cover and solar radiation alter the energy balance of the climate system", and concluded that "increases in anthropogenic greenhouse gas concentrations is very likely to have caused most of the increases in global average temperatures since the mid-20th century".
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