I Got Rhythm A reliable heartbeat is essential for keeping a…

I Got Rhythm

A reliable heartbeat is essential for keeping a steady flow of blood going around the body. But some people have genetic alterations that cause their hearts to beat irregularly in response to exercise or stress (a condition known as CPVT), which is a major cause of sudden death in children and young adults. It’s hard to get hold of heart muscle from people with CPVT to study in the lab, but scientists have now come up with a clever solution. They’ve been turning patients’ blood cells into stem cells and growing them into slabs of heart muscle like the one shown here. The lab-grown muscle cells can ‘beat’ just like a human heart and replicate the irregular rhythms seen in people with CPVT under conditions that mimic exercise. These ‘hearts in a dish’ are a powerful tool for testing potentially lifesaving new treatments for the disease such as gene therapy.

Written by Kat Arney

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350,000 years old stone axes found in in southern Turkey

Archaeologists in Turkey have discovered the world’s second oldest axe, at Antalya’s Karain Cave, believed to be 350,000 years old.

350,000 years old stone axes found in in southern Turkey
Credit: DHA 

The Palaeolithic archaeological site is located at Yagca Village 27 kilometers (17 miles) northwest of Antalya city in southern Turkey.
Harun Taskiran, a professor at the Department of Archaeology in Ankara University, said during the excavation process, they have found a sharp, two sided axe, equaling more or less to the size of a human hand, in the middle Palaeolithic era layers of the cave.

350,000 years old stone axes found in in southern Turkey
Credit: DHA 

He said that the axe must have been used for hunting. Another similar axe was found in the same cave last year.
The presence of axes and tools concludes that the cave was a living space, where ancient people were making tools. It also shows that they (ancient people) had discovered fire and were separating flesh of animals that they hunted.

350,000 years old stone axes found in in southern Turkey
Credit: DHA 

The excavations in the Karain Cave had begun in 1946. The area is believed to have a history of 500,000 years.

Taskiran says that the remains of hippopotamus, rhinoceros, elephants and Homo neanderthalensis were also found in the Cave.

Credit: Arkeolojik Haber [August 10, 2019]

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