KOGG-DT

Mexico, where deserts meet tropics; see fledgling pygmy owls, orca hunting, species in flooded caves and orchid bees filmed in incredible detail with Tom Hanks -- plus new pop-up fun facts revealing more about the hidden lives of unique wildlife.

The Frozen North, where wolves and polar bears vie for food, hares outsmart lynx and walrus sing on rocky shores; as summer arrives, grouse perform mating dances, caribou migrate vast distances and salmon race upstream -- plus new pop-up fun facts.

The SVU must determine fact from fantasy when a famous author twists the details of a serious crime; Fin has a challenging day at work.

Stay informed with the latest breaking news and headlines.

Actor John Lithgow; actress Regina Hall; Malcolm Todd performs.

Actor Paul Rudd; former tennis player Rafael Nadal.

Tom Llamas anchors the latest news, going beyond the headlines to see how lives are affected by the world around them.

Stay informed with the latest breaking news and headlines.

Veterans, first responders and mental health; hackers gain control of a woman's Facebook page and use it to dupe her friends; ways to keep your social media accounts safe.

Reporting of breaking news and developing stories in real time.

This early-morning news covers overnight events, breaking domestic and international news as well as a preview of the day's anticipated events. The program also presents regular reports from the worlds of business, entertainment and sports.

This early-morning news covers overnight events, breaking domestic and international news as well as a preview of the day's anticipated events. The program also presents regular reports from the worlds of business, entertainment and sports.

This early-morning news covers overnight events, breaking domestic and international news as well as a preview of the day's anticipated events. The program also presents regular reports from the worlds of business, entertainment and sports.

Inside the entertainment newsgathering process, as reporters coast-to-coast break headlines, advance the stories of the day and sit down with celebrities.

News coverage to start the day.

Local, national and international news.

Lizzo performs.

Journalist Lester Holt; summer sleep solutions with Wendy Troxel; documentary subjects Bob Odenkirk and David Cross ("Bob and Dave Climb Machu Picchu"); Lizzo performs.

Chef Krissy Downey; actor Paul Rudd; beauty gadgets with Milly Almodovar; frequently asked business questions with Codie Sanchez.

NBC News provides viewers with the latest national and international news; consumer, health and personal finance reporting; up-to-the-minute local news.

Stay informed with the latest breaking news and headlines.

Dr. Pablo and Danielle sit down with expert guest Dr. Amy Shah to explore the science of the gut microbiome and its connection to diet, inflammation, mood and more to help better understand how food choices influence the body from the inside out.

A woman says her brother's holiday meltdown shattered a stained-glass window, but he insists that multiple guests were to blame.

The plaintiff says the defendant damaged her tiny house during delivery and withheld $1,000 for repairs; the defendant says he sold the house for less, had to cut down a tree branch and move a fence, and offered a $1,000 discount for repairs.

A disgruntled poker player denies breaking into the host's home and stealing property, despite incriminating evidence; a man accuses his former roommate of stealing wine and bedding and disrespecting the household.

How repeated exposure to high temperatures can impact your body long term; sports betting addiction; a man reuses his timeless toys to inspire smiles in a hospital.

Stay informed with the latest breaking news and headlines.

Stay informed with the latest breaking news and headlines.

Local, national and international news.

Local, national and international news.

Tom Llamas anchors the latest news, going beyond the headlines to see how lives are affected by the world around them.

Stay informed with the latest breaking news and headlines.