Fuel cells in bacteria

The exchange of nitrogen between the atmosphere and organic matter is crucial for life on Earth because nitrogen is a major component of essential molecules such as proteins and DNA. One major route for this exchange, discovered ...

How superstitions spread

Ancient Roman leaders once made decisions about important events, such as when to hold elections or where to build new cities, based on the presence or flight patterns of birds. Builders often omit the thirteenth floor from ...

Scientists crack the code to regenerate plant tissues

Plant regeneration can occur via formation of a mass of pluripotent cells. The process of acquisition of pluripotency involves silencing of genes to remove original tissue memory and priming for activation by external input. ...

Bacteria harness viruses to distinguish friend from foe

Bacterial cells that normally colonize our guts can distinguish themselves from other bacterial species using what's traditionally considered their enemy—a virus. Researchers report April 16 in the journal Cell Reports ...

Megalith tombs were family graves in European Stone Age

In a new study published in the Proceedings of the National Academy of Sciences, an international research team led from Uppsala University discovered kin relationships among Stone Age individuals buried in megalithic tombs ...

Turning silenced cancer genes back into fighters

Working with human colon cancer cells and mice, researchers led by experts at the Johns Hopkins Kimmel Cancer Center say they have successfully blocked the activity of portions of a protein known as UHRF1 and restored the ...

Hacker group posts hundreds of law officer records

A hacker group has posted online the personal information of hundreds of federal agents and police officers apparently stolen from websites affiliated with alumni of the FBI's National Academy.

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