What floats these boats? Concrete
Does concrete float? For the hundreds of civil engineering students at the annual National Concrete Canoe Competition, the answer is "yes."
Engineering
Jun 24, 2013
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Page 11 - News tagged with montreal
US, China agree to end 'super greenhouse gases'
China agreed Saturday with the United States to scale back production of "super greenhouse gases" used in refrigerators and air conditioners in a joint bid to fight climate change.
Environment
Jun 8, 2013
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Is the ozone layer on the road to recovery?
(Phys.org)—Satellites show that the recent ozone hole over Antarctica was the smallest seen in the past decade. Long-term observations also reveal that Earth's ozone has been strengthening following international agreements ...
Earth Sciences
Feb 10, 2013
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Ozone thinning has changed ocean circulation, scientists report
According to a Johns Hopkins earth scientist, the hole in the Antarctic ozone layer has caused changes in the way that waters in those southern oceans mix – a situation that has the potential to alter the amount of CO2 ...
Earth Sciences
Jan 31, 2013
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Killer whales trapped in Quebec sea ice (Update)
A community in Quebec's Far North is calling for outside help to free about a dozen killer whales trapped under a vast stretch of sea ice.
Plants & Animals
Jan 9, 2013
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Video of eagle attacking toddler sparks online buzz
A video of a golden eagle swooping down in Montreal and briefly snatching a toddler off the ground sparked online buzz, but turned out on Wednesday to be a hoax that some said harms wildlife.
Internet
Dec 19, 2012
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Discovering the ozone hole: Q&A with Pawan Bhartia
On Sept. 16, 1987, representatives from nations around the world drafted a landmark treaty known as the Montreal Protocol. This step marked the beginning of the international agreement to phase out substances that deplete ...
Earth Sciences
Sep 18, 2012
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UN hails 25-year ozone treaty for preventing disaster
The United Nations treaty to protect the ozone layer signed nearly 25 years ago prevented an environmental disaster, a chief UN scientist said Friday, cautioning though that the Earth's radiation shield is still under threat.
Environment
Sep 14, 2012
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Safer air-conditioner refrigerant helps reverse rapid ozone-layer losses of past decades
If the approaching summer has you calling for an air-conditioning repair, you'll have a personal experience with one of the world's most successful global environmental efforts.
Environment
Apr 4, 2012
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Protecting the climate by reducing fluorinated greenhouse gas emissions
Hydrofluorocarbons (HFCs), which have been used in recent years in increasing quantities as substitutes for CFCs, are also climatically very active and many are also extremely long-lived. In the renowned journal Science an ...
Environment
Feb 24, 2012
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