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Over the next several weeks, astronomers will be looking closely at an asteroid called 2024 YR4 that could be as big as a football field as they try to determine how likely it is to strike Earth in 2032.

As the delta variant takes over in the U.S., new, localized outbreaks are emerging. Those surges are likely driven by pockets of dangerously low vaccination rates.

Tech companies are pouring billions into AI chips and data centers. Increasingly, they are relying on debt and risky tactics. Financial analysts are worried there's a bubble that will soon pop.

Palmer Luckey launched his first tech company as a teenager. He sold it to Facebook for $2 billion. Now he's making AI weapons the Pentagon is buying for itself and also sending to Ukraine.

Alberto Castañeda Mondragón was hospitalized with eight skull fractures and five life-threatening brain hemorrhages. Officers claimed he ran into a wall, but medical staff doubted that account.

With growing interest in mining critical metals from the seafloor, countries are now negotiating international rules. The Trump administration is forging ahead on its own, speeding up environmental review for mining the fragile ecosystem.

Oil analysts who worked in Iraq say Iraqi oil sales had more protections after the U.S. invasion than Venezuelan oil sales today.

When the modern electric vehicle was still in its infancy, drivers worried that vehicles would need expensive battery replacements within a few years. But battery lifespans are exceeding expectations.

In a controversial move, the vaccine advisory group reversed a recommendations for universal immunizing of newborns intended to protect them from a virus that attacks the liver.

Several factors help determine whether a given earthquake will generate a dangerous tsunami, but the process is not yet fully understood.