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New studies show that some people can hear and respond to questions while dreaming.

“Cancer” is not a word we want to hear. Conversations with your doctor about cancer can induce fear, anxiety, and a plethora of other emotions. But what if your doctor uses the phrase This terminology will probably still make a lot of people anxious and, in some situations, could result in some unnecessary treatment.

Several types of malignancies are associated with conditions that, while benign, could infer a more significant risk or likelihood of developing cancer in the future. Terminology including lesions, “stage 0” disease, or carcinoma “in situ” can all describe an abnormal, yet not malignant, finding. In addition to fear, these diagnoses can undoubtedly lead to patient confusion.

A diagnosis indicates abnormal cells present in a single location in the body. If a lesion isous, it has not spread to any other tissue, distant or nearby. This explains why theous conditions associated with several cancer types have names that involve the phrase “in situ,” which means “in its original place.”

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To most people, complex technologies separate modern humans from their ancestors who lived in the Stone Age, thousands or hundreds of thousands of years ago. In today’s fast changing world, older technologies, even those from a few years ago, are often described dismissively as “Stone Age.”

Such terms serve to disconnect us from our ancient relatives, who were much more sophisticated than we sometimes think they were.

A team led by archaeologist Larry Barham at the University of Liverpool recently published robust and well dated evidence for the earliest known use of wood technology. The wooden structure, along with artifacts, date to 476,000 years ago and have been excavated from waterlogged deposits at Kalambo Falls, Zambia.

Dr. Michael Demkowicz predicted self-healing in metal; this summer it was finally observed, shocking scientists around the world.

A microscopic crack grew in a very small piece of platinum when placed under repetitive stretching. The experiment, designed to study fatigue crack growth, continued as predicted for a while. But then, something unexpected happened. The crack stopped growing and instead began to get shorter, effectively “healing” itself.

This incredible observation was made by a group of researchers at Sandia National Laboratories while conducting fracture experiments on nanocrystalline metals. The findings were recently published in the journal Nature.

An exploration of ten of the spookier technosignatures SETI might detect in the future.

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If you could sink through the Earth’s crust, you might hear, with a carefully tuned ear, a cacophany of booms and crackles along the way. The fissures, pores, and defects running through rocks are like strings that resonate when pressed and stressed. And as a team of MIT geologists has found, the rhythm and pace of these sounds can tell you something about the depth and strength of the rocks around you.

“If you were listening to the rocks, they would be singing at higher and higher pitches, the deeper you go,” says MIT geologist Matěj Peč.