'Bog butter' may have had semi-religious significance during the time in which it was buried.
NASA used the massive Porter Ranch methane leak to test its equipment and found it could detect the gas from space.
A study performed largely in Japanese cat cafés showed that house cats are highly attuned to the laws of physics while hunting.
It's unlikely to contain life, but the Jupiter-sized planet is the largest real-life version of Tatooine, the fictional world that boasts two suns from 'Star Wars.'
Laser scans reveal multiple cities hidden beneath the jungle, shedding new light on the ancient Khmer Empire that built Angkor Wat.