Old Earth evidence is apparent across the sciences; add an 800k year old meteor impact.

"About 800,000 years ago, a monster space rock struck the Earth hard and fast. The impact of the 1.2 mile-wide (1.9 kilometre-wide) meteorite flung debris across 10 percent of the planet's surface.

Scientists have found this ancient debris, mostly in the form of glass blobs known as tektites, in Asia, Australia, and Antarctica. But until now, researchers had never found the site where the meteorite hit.

They'd been searching unsuccessfully for more than a century.

In a new study published in the journal Proceedings of the National Academy of Sciences, scientists describe the location where they think this massive rock crashed: a volcanic field in southeastern Laos.

"There have been many, many attempts to find the impact site and many suggestions, ranging from northern Cambodia, to central Laos, and even southern China, and from eastern Thailand to offshore Vietnam," Kerry Sieh, the lead author of the study, told CNN.

Sieh's team's research offers strong evidence that the crater is buried underground – which explains why researchers couldn't find it before.

The case of a missing impact crater

When a meteorite hits, it super-heats rocks at the point of impact and catapults them into the sky. These liquefied rocks then cool into tektites. By examining where tektites are strewn, scientists can trace the origin of the meteorite that created them." Read the full article.