The National | Sep 28, 2011 | 5:20

Grizzly Deaths

Trains have become the number one killer of grizzly bears in Banff National Park. Why is it happening, and what can be done about it?

Now Playing on CBC Radio Help Refresh

Live audio streams for phones and tablets: Radio One and CBC Music (Radio 2, Radio 3 and more)

CBC Radio One

Listen Live Ottawa change

CBC Radio 2

Listen Live Eastern change

CBC Radio 3

Listen Live Radio 3
The National - Anger over Vancouver fuel spillApr 10, 2015 | 3:43The National Anger over Vancouver fuel spill Video
The National Anger over Vancouver fuel spill Apr 10, 2015 | 3:43Premier Christy Clark and Vancouver Mayor Gregor Robertson question the judgment and effectiveness of the coast guard's emergency response
The National - Walkerton memorialMay 16, 2010 | 1:46The National Walkerton memorial Video
The National Walkerton memorial May 16, 2010 | 1:46Residents in Walkerton, Ont., honoured the seven people who died in the E.coli outbreak a decade ago
The National - California droughtFeb 14, 2014 | 2:32The National California drought Video
The National California drought Feb 14, 2014 | 2:32California is enduring a devastating drought that could create the worst water crisis in the history of the state.
The National - Cleanup fluffDec 1, 2014 | 2:38The National Cleanup fluff Video
The National Cleanup fluff Dec 1, 2014 | 2:38Highly absorbent milkweed fluff promises to offer a cost-effective and environmentally sound way to clean up oil spills
The National - Fracking concernsOct 18, 2013 | 2:20The National Fracking concerns Video
The National Fracking concerns Oct 18, 2013 | 2:20Concerns about fracking are widespread, especially for people who live near those operations, CBC's Chris Brown reports
The National - A tale of two lunch roomsMar 25, 2013 | 3:06The National A tale of two lunch rooms Video
The National A tale of two lunch rooms Mar 25, 2013 | 3:06Students at UBC see whether the design of their cafeterias affected if they used their recycling bins.
The National - Ontario woman advocates protection and cultivation of  treesJan 13, 2014 | 6:35The National Ontario woman advocates protection and cultivation of trees Video
The National Ontario woman advocates protection and cultivation of trees Jan 13, 2014 | 6:35To Diana Beresford-Kroeger, trees are an integral part of her world. And she has made it her mission to nurture them for future generations.
The National - China's toxic soilAug 23, 2014 | 3:47The National China's toxic soil Video
The National China's toxic soil Aug 23, 2014 | 3:47A once-secret government study says that nearly 20% of all farmland is polluted, causing danger to the people working on the fields and those buying its products
The National - Preparing for an earthquake in VancouverAug 24, 2014 | 2:01The National Preparing for an earthquake in Vancouver Video
The National Preparing for an earthquake in Vancouver Aug 24, 2014 | 2:01Following the destructive earthquake in California, Vancouver rehearses in case of an emergency.
The National - Naomi Klein discusses book This Changes EverythingSep 12, 2014 | 5:49The National Naomi Klein discusses book This Changes Everything Video
The National Naomi Klein discusses book This Changes Everything Sep 12, 2014 | 5:49Naomi Klein discusses her new book This Changes Everything, in which she says it's time to stop counting on the politicians to save the planet.
The National - Is Miami Beach drowning?Oct 15, 2014 | 7:12The National Is Miami Beach drowning? Video
The National Is Miami Beach drowning? Oct 15, 2014 | 7:12The Union of Concerned Scientists is warning climate change is raising sea levels and the panel predicts Miami faces being swamped.
The National - Photographer Camille Seaman captures an icy landscape that's melting awayMar 2, 2015 | 10:58The National Photographer Camille Seaman captures an icy landscape that's melting away Video
The National Photographer Camille Seaman captures an icy landscape that's melting away Mar 2, 2015 | 10:58Camille Seaman is a photographer with a passion for ice. She's working in Alaska, raising the alarm about a landscape that's melting away.
The National - A Growing ThreatDec 7, 2011 | 11:02The National A Growing Threat Video
The National A Growing Threat Dec 7, 2011 | 11:02People travel from all over the world to see polar bears in Churchill, Manitoba. But is all of this attention really a good thing?
The National - From Jan. 23, 2013 | Beijing's 'Airpocalypse'Jan 23, 2013 | 2:25The National From Jan. 23, 2013 | Beijing's 'Airpocalypse' Video
The National From Jan. 23, 2013 | Beijing's 'Airpocalypse' Jan 23, 2013 | 2:25Air quality in Beijing, China's notoriously polluted capital, has always been a problem, but this week it was so bad it literally went off the index
The National - Environment-economy warningFeb 5, 2013 | 5:24The National Environment-economy warning Video
The National Environment-economy warning Feb 5, 2013 | 5:24The environment commissioner warned Tuesday about the way Canada balances the growing resource industry and its growing environmental risks

2 of 34