Scientists say they've solved debate about origins of mysterious dinosaur
The discovery "rewrites decades of research on Earth's most famous predator," the study's co-author said.
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The discovery "rewrites decades of research on Earth's most famous predator," the study's co-author said.
Apex predators, like the Tyrannosaurus rex, eventually arose from smaller-bodied tyrannosauroid dinosaurs called Khankhuuluu mongoliensis, the study's researchers said.
The researchers determined it predated T. rex by up to 7 million years, showing that tyrannosaurs were in North America long before paleontologists previously thought.
The 200-pound skull fossil, nicknamed Maximus, is being sold by an owner who wishes to remain anonymous, the auction house said.
Rare prehistoric dinosaur footprints discovered in the UK have shed new light on the middle Jurassic period, according to a new report.
The rare Triceratops fossil found at a construction site in Thornton has a name: Tiny. Students at Brantner Elementary School named the 66-million-year old dinosaur.
It was nearing the end of summer when a construction site inspector noticed something out of the corner of his eye no bigger than a quarter that turned out to be something much bigger.
Even more dinosaur bones have surfaced at the dig for Triceratops in Thornton. This is the latest in a series of fossil discoveries at the site in the past month.
More Triceratops fossils were found Monday at the site of the big triceratops discovery last month in Thornton.
The digging continues at the site of the big triceratops discovery in Thornton, and this week evidence of another dinosaur was found.
The Denver Broncos promised there would be a few tricks and treats at Sunday's home game at the Chargers, and one of the best of those came from a cheerleader.
Dinosaur Ridge in Morrison have uncovered more mysteries about dinosaurs, particularly how they mate.
Even with a little fresh snow, wildfire risk remains top of mind in Colorado's mountain communities after an exceptionally dry winter. Some neighborhoods are practicing evacuation drills to prepare.
The Aurora City Council says it needs residents' help finding ways to ensure respectful, productive public comment at city council meetings.
The Colorado State Patrol is investigating after a car struck the second story of a church in Security-Widefield on Saturday night.
A man raised in Aurora is making a name for himself in the UFC. Saturday, Youseff Zalal stepped into the octagon for his first ever main event match.
Police are seeking other potential sexual assault victims of a rideshare driver who is now accused of driving away with an intoxicated female when her boyfriend got out of the vehicle.
Even with a little fresh snow, wildfire risk remains top of mind in Colorado's mountain communities after an exceptionally dry winter. Some neighborhoods are practicing evacuation drills to prepare.
The Aurora City Council says it needs residents' help finding ways to ensure respectful, productive public comment at city council meetings.
The Colorado State Patrol is investigating after a car struck the second story of a church in Security-Widefield on Saturday night.
A man raised in Aurora is making a name for himself in the UFC. Saturday, Youseff Zalal stepped into the octagon for his first ever main event match.
Police are seeking other potential sexual assault victims of a rideshare driver who is now accused of driving away with an intoxicated female when her boyfriend got out of the vehicle.
Joe Ruch is tracking storms across Colorado
A group of fourth-graders from Park Hill Elementary in Denver came up with a quicker solution to cool classrooms without air conditioning.
On Sunday the Denver Art Museum celebrated it's 24th Annual Día Del Niño, a day of festivities honoring kids through performances, activities and more.
On Monday, the Colorado State Senate will take up a bill that could help restaurants make ends meet by eliminating credit card swipe fees.
The Aurora City Council says it needs residents' help finding ways to ensure respectful, productive public comment at city council meetings.
The Denver Broncos selected defensive tackle Tyler Onyedim from Texas A&M in the third round of the NFL draft Friday night.
Here is what to know about where and when to watch the 2026 NFL Draft.
The 2026 NFL Draft is taking place in Pittsburgh. Here is the full list of Round 1 picks.
Some robots ran the Beijing half-marathon autonomously, while others were controlled remotely, all competing on a parallel course to avoid collisions with human athletes.
Kroenke Sports and Entertainment announced they have contracted a team to broadcast its games in Spanish for the playoffs.
CBS News senior White House correspondent Weijia Jiang was sitting next to President Trump at the White House Correspondents' Dinner when the chaos unfolded.
The suspect was identified to CBS News by law enforcement sources as 31-year-old Cole Allen of Torrance, California.
President Trump was safely evacuated from the White House Correspondents' Association Dinner Saturday night after shots were fired outside the ballroom of the Washington Hilton Hotel.
President Trump cited wasted time and confusion over leadership, adding, "we have all the cards."
Economists say Americans should expect elevated prices at the pump and rising grocery costs in the months to come.
After a shooting at the White House Correspondents' Dinner, both Democratic and Republican lawmakers in Colorado have spoken out in strong opposition to acts of political violence.
CBS News senior White House correspondent Weijia Jiang was sitting next to President Trump at the White House Correspondents' Dinner when the chaos unfolded.
The suspect was identified to CBS News by law enforcement sources as 31-year-old Cole Allen of Torrance, California.
President Trump was safely evacuated from the White House Correspondents' Association Dinner Saturday night after shots were fired outside the ballroom of the Washington Hilton Hotel.
President Trump cited wasted time and confusion over leadership, adding, "we have all the cards."
Millions of people rely on the supplemental insurance to offset the deductibles, copayments, and other costs faced by enrollees in the traditional Medicare program.
Work requirements will encourage people who are able to work to seek and maintain jobs, proponents say. But researchers haven't found that they lower the unemployment rate.
Former Trump Surgeon General Dr. Jerome Adams described Dr. Erica Schwartz as a "home run pick."
Health Secretary Robert F. Kennedy Jr. testified before the House Ways and Means Committee on Thursday, kicking off an expected sprint of seven budget hearings he'll attend over the next week.
CBS News reported Wednesday that Dr. Erica Schwartz was emerging as the president's top pick for the role.
Economists say Americans should expect elevated prices at the pump and rising grocery costs in the months to come.
An Aurora restaurant paid a fine after an investigation found a teen employee was allowed to load a trash compactor — a federally prohibited hazardous task for a minor — and some employees worked longer than federal law allows.
Travelers could see airline fares rise and fewer flights available in the coming weeks, Chevron CEO Mike Wirth said in an interview with "Face the Nation with Margaret Brennan."
The Trump administration started accepting applications in December for foreigners willing to pay $1 million for the right to live in the U.S.
New lawsuit accuses JetBlue of using consumers' browser activity and other personal data to set airfares.
A new, nearly 700-page report describes the Evergreen High School shooter's every move the day of the shooting last September, the law enforcement response, and interviews with friends, family, teachers, and witnesses.
A Denver City Council member is pushing to reopen long-term fire service contracts she says are now draining city resources instead of generating revenue.
A Denver family is sharing their story after thieves got away with the steel sculpture that stood outside their home for over a decade.
When the Orion spacecraft lifted off April 1, four astronauts were aboard -- but for the families of dozens of workers who died before the launch, the mission carried something else: the weight of those who would never see it fly.
A single malfunctioning piece of new equipment triggered a recent, sweeping power outage at Denver International Airport — an incident that stranded passengers in elevators and delayed nearly 500 flights.