What to know about avian influenza in dairy cows and the risk to humans
Why is H5N1, or bird flu, a concern, how does it spread, and is there a vaccine? Here are the answers to some frequently asked questions about avian influenza.
To slow the speed at which high temperatures and warm waters bleach the corals of the Great Barrier Reef, Australian scientists are spraying droplets of ocean water into the sky to form clouds to protect the environmental treasure.
Researchers working on the so-called Cloud Brightening project said they use a turbine to spray microscopic sea particles to thicken existing clouds and reduce sunlight on the world's largest coral reef ecosystem located off Australia's northeast coast.
The water droplets evaporate leaving only tiny salt crystals which float up into the atmosphere allowing water vapor to condense around them, forming clouds, said Daniel Harrison, a senior lecturer at Southern Cross University, who runs the project.
"If we do it over an extended period of time for a few weeks to a couple of months when the corals are experiencing a marine heatwave we can actually start to lower the water temperature over the Reef," said Harrison.
The project had its second trial in March, the end of the Southern Hemisphere summer when the Reef off Australia's northeast is at its hottest, gathering valuable data on the atmosphere when corals are at most risk of bleaching.
A combination of light and warm water causes coral bleaching. By cutting light over the reef by six per cent in summer, "bleaching stress" would be cut by 50 per cent to 60 per cent on the undersea ecosystem, Harrison said.
But the benefits of cloud brightening would lessen over time unless other measures slowed the march of climate change.
"If we do have really strong action on climate change then the modeling shows that the cloud brightening is enough to stop the reef declining and to actually see it through this period while we reduce our carbon emissions," he said.
One of Australia's best-known natural attractions, the Reef came close to being listed as an endangered World Heritage Site by the United Nations, although it avoided the designation following lobbying by Australia.
(Reporting by Stefica Nicol Bikes writing by Byron Kaye; editing by Christian Schmollinger)
Why is H5N1, or bird flu, a concern, how does it spread, and is there a vaccine? Here are the answers to some frequently asked questions about avian influenza.
An Ontario man who took out a loan to pay for auto repairs said his car was repossessed after he missed two payments.
Royal commentator Afua Hagan writes that when King Charles recently admitted Catherine to the Order of the Companions of Honour, it not only made history, but it reinforced the strong bond between the King and his beloved daughter-in-law.
A Massachusetts man who told police he was exorcising a demon and performing a baptism when he shoved his father's head under water multiple times has been convicted of involuntary manslaughter in his death.
American troops will be spending more time training in the Far North, the new commander of Norad says, a strategy that fits 'hand-in-glove' with Canada's renewed focus on Arctic defence.
During a special winner celebration near their hometown, Doug and Enid shared the story of how they discovered they were holding a Lotto Max ticket worth $70 million and how they kept this huge secret for so long.
A new survey by Dalhousie University's Agri-Food Analytics Lab asked Canadians about their food consumption habits amid rising prices.
It was evident to the federal government as early as last fall that Loblaw and Walmart might be holdouts to the grocery code of conduct, jeopardizing the project's success.
Charlie Woods failed to advance in a U.S. Open local qualifying event Thursday, shooting a 9-over 81 at Legacy Golf & Tennis Club.
Mounties in Nanaimo, B.C., say two late-night revellers are lucky their allegedly drunken antics weren't reported to police after security cameras captured the men trying to steal a heavy sign from a downtown business.
A property tax bill is perplexing a small townhouse community in Fergus, Ont.
When identical twin sisters Kim and Michelle Krezonoski were invited to compete against some of the world’s most elite female runners at last week’s Boston Marathon, they were in disbelief.
The giant stone statues guarding the Lions Gate Bridge have been dressed in custom Vancouver Canucks jerseys as the NHL playoffs get underway.
A local Oilers fan is hoping to see his team cut through the postseason, so he can cut his hair.
A family from Laval, Que. is looking for answers... and their father's body. He died on vacation in Cuba and authorities sent someone else's body back to Canada.
A former educational assistant is calling attention to the rising violence in Alberta's classrooms.
The federal government says its plan to increase taxes on capital gains is aimed at wealthy Canadians to achieve “tax fairness.”
At 6'8" and 350 pounds, there is nothing typical about UBC offensive lineman Giovanni Manu, who was born in Tonga and went to high school in Pitt Meadows.