The NationalNew Horizons Pluto flybyJul 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 NationalClimate change is killing off bumblebees: studyJul 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 NationalDNA edits of embryosMar 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 NationalVirgin Galactic spaceship crashesOct 31, 2014 | 2:28A Virgin Galactic spaceship crashed during a test flight in California. One of the two pilots on board was killed, the other seriously injured.