National News

Tom Tillotson, center, watches as Donna Kaye Erwin cast the first ballot for the nation's first primary in Dixville Notch, N.H., in 2008.

3 Tiny New Hampshire Towns Vote At Midnight. Do They Predict Anything?

They say when Punxsutawney Phil sees his shadow, it means six more weeks of winter.

When Dixville Notch, in the far northern reaches of New Hampshire, votes just after midnight Tuesday, will it be six more weeks (or more) of Trump?

As with Pennsylvania's non-predictive groundhog, not necessarily.

The town's 100 percent turnout is quite impressive, if you don't consider that it hit its 38-vote peak in 1988, according to The Boston Globe. (The Globe also reported that only ten will vote in the town this year.)

Emotion seemed to fuel plenty of sighs by Humphrey Bogart's character Rick (right) in the 1942 film classic <em>Casablanca, </em>and even Rick's good friend Sam, played by actor Dooley Wilson, couldn't console him.

Sorry, Bogie, A Sigh Is Not Just A Sigh

The sighs we notice usually accompany emotions like relief or discontent. But our brains are programmed to make us heave an unconscious sigh every five minutes or so — no matter how we feel.

"Sighing is vital to maintain lung function," says Jack Feldman, a brain scientist at UCLA. These periodic deep breaths reinflate tiny air sacs in the lungs that have gone flat. But the brain circuitry behind those reflexive sighs has been a mystery.

U.S. Charges Widow Of ISIS Leader In Death Of American Kayla Mueller

The wife of a dead ISIS leader has been charged with having a "role in a conspiracy that resulted in the death of American citizen Kayla Mueller in February 2015," Justice Department documents say.

Nisreen Assad Ibrahim Bahar, also known as Umm Sayyaf, is an Iraqi citizen and was the wife of ISIS leader Abu Sayyaf before he was killed in a U.S. military operation last year.

Presidential candidate New Jersey Gov. Chris Christie speaks at a town hall-style campaign event in Hampton, N.H., on Sunday.

WATCH: Republicans — Then And Now — Talking About Drug Addiction

If you pay attention to way Republican presidential candidates are talking about drug abuse, it seems vastly different from the way the party leaders of the past talked about the issue.

Perhaps the new, more compassionate stance was synthesized best by New Jersey Gov. Chris Christie during Saturday's GOP debate.

Christie touted his record of keeping drug abusers out of jails.

"This is a disease. It's not a moral failing," Christie said. Before we get to what it means, here are some videos for you to compare and contrast:

Trudeau Says Canada Will Cease Airstrikes Against ISIS In Syria And Iraq

Canada's Prime Minister Justin Trudeau says that Canada will cease its airstrikes against self-proclaimed Islamic State militants in Iraq and Syria by Feb. 22.

It will remain part of the coalition targeting the militants.

Canadian troops will now "focus on training and advising local security forces to take their fight directly to ISIL," according to a government statement.

Scientists Discover A Second Bacterium That Causes Lyme Disease

Until very recently it was thought that just one bacterium was to blame for causing Lyme disease in humans. But it turns out that a second, related bug can cause it too.

In 2013, during routine testing of bacterial DNA floating around in the blood samples of people suspected of having Lyme disease, researchers at the Mayo Clinic in Rochester, Minn., realized they were looking at something different.

A patient is pictured at a camp for diarrhea patients in Dhaka, Bangladesh. Among the nominations for untold story last year: the need for vaccines to prevent "severe, deadly diarrhea" in this part of the world.

Contest: Seeking Nominations For Untold Stories In Global Health

Do you know any global health stories that should be getting coverage — but are overlooked by the media?

The Denver Broncos' Super Bowl victory against the Carolina Panthers was the third most-watched broadcast in U.S. television history. CBS also streamed the game online.

A Skeptical Review Of CBS' Super Bowl Online Streaming Success

If you watched Sunday's Super Bowl, how did you get it? Over cable? Rabbit ears? (Yes, those still work.) Or did you stream it online?

Divers around the open-ocean aquaculture cage at the Cape Eleuthera Institute in the Bahamas. These cages are not currently used in the Gulf of Mexico, but represent one type of farming technology that could work in the region.

Gulf Of Mexico Open For Fish-Farming Business

The Gulf of Mexico is now open for commercial fish farming.

The National Oceanic and Atmospheric Administration (NOAA) announced last month that, for the first time in the U.S., companies can apply to set up fish farms in federal waters.

The idea is to compete with hard-to-regulate foreign imports. But opening the Gulf to aquaculture won't be cheap, and it could pose environmental problems.

Jeneyah McDonald stands amid cases of bottled water in the kitchen of her home in Flint, Mich. Before water donations arrived in Flint, McDonald says, she spent an estimated $100 out of her $300 weekly grocery bill buying safe water for her family.

When Every Drop Of Water Could Be Poison: A Flint Mother's Story

The problems with high lead levels in Flint, Mich.'s water started in April 2014, when the city switched water sources and began drawing its supply from the Flint River. The new water was harder, and government officials allowed it to corrode the city's pipes, leaching lead and other toxins into the tap water.