Pangaea Biosciences, Author at Pangaea Biosciences - Page 26 of 73 Archive

Orcas are first non-humans whose evolution is driven by culture

You could call it a culture shock. Many researchers accept that cultural experiences have helped shape human evolution – and evidence has now emerged that the same may be true of killer whales. Human genomes have evolved in response to our cultural behaviours: a classic example is the way that some human populations gained genes for…

Researchers Discover ‘Anxiety Cells’ In The Brain

Scientists have found specialized brain cells in mice that appear to control anxiety levels. The finding, reported Wednesday in the journal Neuron, could eventually lead to better treatments for anxiety disorders, which affect nearly 1 in 5 adults in the U.S. "The therapies we have now have significant drawbacks," says Mazen Kheirbek, an assistant professor at the University…

This ancient jawbone suggests our species left Africa 40,000 years earlier than expected

In a collapsed cave on the western slope of Mount Carmel in Israel, researchers have found the jawbone of an ancient human who may have been one of the first modern members of our species to leave Africa. Here, in a huge cave by the Mediterranean Sea, ancient people roasted hare, turtle, and ostrich eggs…

These monkey twins are the first primate clones made by the method that developed Dolly

Chinese scientists have produced two genetically identical long-tailed macaques using the same technique that gave us Dolly the sheep, the world’s first cloned mammal. The feat is a first for nonhuman primates, and despite limitations, it could lead to batches of genetically uniform monkeys for biomedical research. Previous attempts to clone monkeys through the Dolly…

Rare Florida sparrow could vanish this year and more birds could be at risk

The grasshopper sparrow, a tiny Florida prairie bird perched on the verge of extinction for the last decade, may have encountered a final, unconquerable foe: an invasive new disease quickly killing off its young. The disease has spread so rapidly that wildlife managers now fear another endangered sparrow, the Cape Sable seaside sparrow in the…

In ‘pond scum,’ scientists find answers to one evolution’s which-came-first cases

Visiting a colleague in Germany in 2012, Boston College Research Professor Paul K. Strother was examining soil samples for pollen, spores, pieces of plants and insect legs - organic debris that might otherwise have been considered "pond scum" when it was trapped in sediment during cataclysmic earth events 200 million years ago. The slides of…

Scientists curb growth of cancer cells by blocking access to key nutrients

Salk researchers have discovered how to curb the growth of cancer cells by blocking the cells' access to certain nutrients. The approach, detailed in a new paper published today in Nature, took advantage of knowledge on how healthy cells use a 24-hour cycle to regulate the production of nutrients and was tested on glioblastoma brain tumors…

The Hole in Earth’s Ozone Layer Is Healing

Efforts to heal the hole in Earth's ozone layer over Antarctica appear to be paying off, according to a new, first-of-its-kind study that looked directly at ozone-destroying chemicals in the atmosphere. Earth's ozone layer protects the planet's surface from some of the sun's more harmful rays that can cause cancer and cataracts in humans, and…

New drug capsule may allow weekly HIV treatment

Researchers at MIT and Brigham and Women's Hospital have developed a capsule that can deliver a week's worth of HIV drugs in a single dose. This advance could make it much easier for patients to adhere to the strict schedule of dosing required for the drug cocktails used to fight the virus, the researchers say.…

Women survive crises better than men

Women today tend to live longer than men almost everywhere worldwide -- in some countries by more than a decade. Now, three centuries of historical records show that women don't just outlive men in normal times: They're more likely to survive even in the worst of circumstances, such as famines and epidemics, researchers report. Most…

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Recent Posts by Pangaea Biosciences

Orcas are first non-humans whose evolution is driven by culture

Researchers Discover ‘Anxiety Cells’ In The Brain

This ancient jawbone suggests our species left Africa 40,000 years earlier than expected

These monkey twins are the first primate clones made by the method that developed Dolly

Rare Florida sparrow could vanish this year and more birds could be at risk

In ‘pond scum,’ scientists find answers to one evolution’s which-came-first cases

Scientists curb growth of cancer cells by blocking access to key nutrients

The Hole in Earth’s Ozone Layer Is Healing

New drug capsule may allow weekly HIV treatment

Women survive crises better than men

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