Rats Dream About Where They Want To Go

Humans aren’t the only ones thinking about a better tomorrow. Rats too spend their nights dreaming of their desired futures, according to new research.

The study, out of the University College London (UCL), says that sleeping rats “dream” of finding treats. Activity in the portion of rat brain cells used in navigation suggests that rats rehearse simulated quests to find food while sleeping.

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The Continents Rose Above Earth’s Oceans Way Earlier Than We Thought

earth continental crust

The Earth’s thick continental crust — the rocky stuff that makes up the land masses on which we live — may have risen from the oceans much earlier in our planet’s history than scientists thought.

Previous studies suggested that the crust surfaced within the past 2.5 billion years. But a new study indicates that they emerged some 500 million years earlier. Talk about old!

“There is increasing evidence from a number of studies that big changes were taking place at circa 3 billion years ago, and a number of people have argued that plate tectonics may have started at around that time,” Dr. Bruno Dhuime, a geochemist at the University of Bristol in England and co-author of the study, told The Huffington Post in an email. “It is consistent that the continents emerged at that time.”

For the study, the researchers scoured databases of previous analyses on more than 13,000 rock samples taken from the continental crust. In these analyses, the researchers took a close look at the chemistry and the ages of the rocks.

Based on that data, the researchers concluded that the chunks of crust must have emerged around 3 billion years ago — and the buoyant nature of the rocks would have allowed them to rise high above what is now known as the oceanic crust (or seafloor), Live Science reported.

(Story continues below.)

A cross-section infographic of some of Earth’s layers, depicting the continental crust (1), the oceanic crust (2), and the upper mantle (3).

Dhuime noted in the email that what happened in the time before the continental crust’s debut remains a mystery.

“Before continents emerged we assume that much of the Earth was covered in basaltic crust, much like the crust we find at the bottom of the —> Read More

18-Year-Old Caitlin Adams Runs 410 Miles Across Maryland To Raise Money For Prosthetic Limbs

What are you doing this summer?

Whatever your plans are, they’re likely less ambitious than those of 18-year-old Caitlin Adams, who just finished a 410-mile run across the state of Maryland, according to a Twitter | Instagram | Tumblr | Pheed |

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