Mapping dark matter may help solve a cosmic mystery
Clip: 4/14/2015 | 4m 57s
We can't see dark matter, but scientists have made the largest map yet of the material.
We can't see dark matter, but scientists have made the largest map yet of the invisible material that helps make up the universe. Researchers used a dark energy camera and a large telescope to create a color-coded chart of just a small part of the cosmos. Jeffrey Brown talks to Sean Carroll of the California Institute of Technology about how they did it and why it matters.
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Major corporate funding for the PBS News Hour is provided by BDO, BNSF, Consumer Cellular, American Cruise Lines, and Raymond James. Funding for the PBS NewsHour Weekend is provided by...
Mapping dark matter may help solve a cosmic mystery
Clip: 4/14/2015 | 4m 57s
We can't see dark matter, but scientists have made the largest map yet of the invisible material that helps make up the universe. Researchers used a dark energy camera and a large telescope to create a color-coded chart of just a small part of the cosmos. Jeffrey Brown talks to Sean Carroll of the California Institute of Technology about how they did it and why it matters.
Problems playing video? | Closed Captioning Feedback
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Artist layers ads, vintage cartoons like decaying billboards
Clip: 4/14/2015 | 9m 21s | Greg Gossel's mixed-media art uses pop culture imagery, typography, and found materials. (9m 21s)
Can Nigeria’s new leader help find the missing schoolgirls?
Clip: 4/14/2015 | 5m 9s | Gwen Ifill talks to Christopher Fomunyoh of the National Democratic Institute. (5m 9s)
Flake: Despite Iran deal skepticism, ‘no good alternatives’
Clip: 4/14/2015 | 11m 1s | Judy Woodruff gets insight and reaction from Sen. Jeff Flake, R-Ariz. (11m 1s)
How drinking water pipes can also deliver electric power
Clip: 4/14/2015 | 6m 49s | Hydroelectricity has long been a small but key source of renewable energy. (6m 49s)
Iraqi-Americans witness violence in their homeland from afar
Clip: 4/14/2015 | 2m 48s | Three Iraqis living in the U.S. talk about their fears for their homeland. (2m 48s)
Why character, not career, is key to a life of consequence
Clip: 4/14/2015 | 7m 1s | David Brooks discusses his new book, “The Road to Character.” (7m 1s)
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Major corporate funding for the PBS News Hour is provided by BDO, BNSF, Consumer Cellular, American Cruise Lines, and Raymond James. Funding for the PBS NewsHour Weekend is provided by...