The National | Aug 22, 2013 | 2:37

    Megaquake aftershock dangers

    Scientists warn that cities in earthquake zones need to better prepare for powerful aftershocks stemming from megaquakes

    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 - The barcode of life on EarthAug 21, 2015 | 2:30The National The barcode of life on Earth Video
    The National The barcode of life on Earth Aug 21, 2015 | 2:30Canadian researchers leading massive project to catalogue all 10 to 20 million of Earth's species with DNA barcoding
    The National - A New Kind of EnergyAug 18, 2015 | 12:12The National A New Kind of Energy Video
    The National A New Kind of Energy Aug 18, 2015 | 12:12A look at an industry harnessing the power of ocean waves.
    The National - Salmon threatened by B.C. heat waveAug 7, 2015 | 4:37The National Salmon threatened by B.C. heat wave Video
    The National Salmon threatened by B.C. heat wave Aug 7, 2015 | 4:37Warm water and low stream flows are a double whammy for vital B.C. fish stocks
    The National - Office cold warJul 29, 2015 | 2:25The National Office cold war Video
    The National Office cold war Jul 29, 2015 | 2:25Why the battle over cranking up the a/c at work falls along gender lines
    The National - Pluto flyby confirmed by NASAJul 14, 2015 | 2:39The National Pluto flyby confirmed by NASA Video
    The National Pluto flyby confirmed by NASA Jul 14, 2015 | 2:39CBC's Bob McDonald on the successful flyby of NASA's New Horizons spacecraft
    The National - New Horizons Pluto flybyJul 13, 2015 | 8:02The National New Horizons Pluto flyby Video
    The National New Horizons Pluto flyby Jul 13, 2015 | 8:02Tomorrow, the New Horizons spacecraft will get the closest look at Pluto we've ever seen. Science Correspondent Bob MacDonald reveals what we can expect.
    The National - Climate change is killing off bumblebees: studyJul 9, 2015 | 2:32The National Climate change is killing off bumblebees: study Video
    The National Climate change is killing off bumblebees: study Jul 9, 2015 | 2:32A Canadian-led study, published in the journal Science, says bumblebees have been slowly disappearing from North America and Europe. because of climate change.
    The National - The making of a mammothApr 23, 2015 | 2:11The National The making of a mammoth Video
    The National The making of a mammoth Apr 23, 2015 | 2:11Ron Charles on how scientists recovered the woolly mammoth's genome
    The National - DNA edits of embryosMar 26, 2015 | 2:35The National DNA edits of embryos Video
    The National DNA edits of embryos Mar 26, 2015 | 2:35Prominent scientists warn it's time for a moratorium on powerful new genetic engineering tools that can add and remove genes from sperm, eggs or human embryos
    The National - Watch a dive through the eyes of a leatherback turtleMar 21, 2015 | 2:07The National Watch a dive through the eyes of a leatherback turtle Video
    The National Watch a dive through the eyes of a leatherback turtle Mar 21, 2015 | 2:07Video from 'turtle cam' records sea turtles diving up to 40 metres to capture their prey
    The National - Wendy Interviews Dr. Norman DoidgeFeb 13, 2015 | 10:14The National Wendy Interviews Dr. Norman Doidge Video
    The National Wendy Interviews Dr. Norman Doidge Feb 13, 2015 | 10:14This psychiatrist claims we can treat autism, Parkinson's and multiple sclerosis with the power of thought.
    The National - Ottawa's frost quakeJan 10, 2015 | 2:15The National Ottawa's frost quake Video
    The National Ottawa's frost quake Jan 10, 2015 | 2:15CBC's Sandra Abma has the science on the winter phenomenon that hit Ottawa with some powerful tremors earlier this week
    The National - 2014 Science StoriesDec 29, 2014 | 17:31The National 2014 Science Stories Video
    The National 2014 Science Stories Dec 29, 2014 | 17:31Our science guy, Bob McDonald, looks back at this year's top science stories.
    The National - Chris Hadfield on Orion launchDec 5, 2014 | 1:42The National Chris Hadfield on Orion launch Video
    The National Chris Hadfield on Orion launch Dec 5, 2014 | 1:42Former astronaut talks about the importance of the Orion space capsule launch and the possible future of NASA's space program
    The National - One small step towards MarsDec 5, 2014 | 2:30The National One small step towards Mars Video
    The National One small step towards Mars Dec 5, 2014 | 2:30NASA is calling it 'Day 1 of the Mars era' with the successful launch of the Orion space capsule

    1 of 23