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Phages—tiny entities that infect bacteria—were discovered over 100 years ago but were largely abandoned as therapies. Now they’re making a comeback.Regular readers will know that the microbiome is one of my favorite topics to cover. The billions of bacteria crawling all over our bodies play a vital role in our health, influencing everything from digestion to immune health and even our moods. But there’s something else that makes a home inside us. Bacteriophages—or phages for short—are microscopic viruses even smaller than our gut microbes. These viruses infect bacteria and turn them into factories to make more of themselves. Phages were...

Everyone is surrounded by a unique "cloud" of millions of their own bacteria, according to scientists at the University of Oregon in the US. Walk through someone else's cloud, and it will "rain" bacteria on your skin and be breathed into your lungs. The study on 11 people, published in the journal PeerJ, showed it was possible to identify people from their microbial miasma. ... Groups of bacteria in the cloud included Streptococcus, which is common in the mouth, and the skin bugs Propionibacterium and Corynebacterium. The researchers argue the mix may have a "forensic application" to detect whether someone...

Bacteria can be used to turn dirty salt water into electricity and drinkable water, according to new research from scientists at Penn State University and Tsinghua University. The research presents a new spin on microbial fuel cells, which have been used in the past to produce electricity or store it as hydrogen or methane gas.

The soil on Mars may contain microbial life! Joop Houtkooper of the University of Giessen, Germany, will declare on Friday the Viking spacecraft may have found signs of a weird life form based on hydrogen peroxide on the subfreezing, arid Martian surface. His analysis of one of the experiments carried out by the Viking spacecraft suggests that 0.1 percent of the Martian soil could be of biological origin. That is roughly comparable to biomass levels found in some Antarctic permafrost, home to a range of hardy bacteria and lichen. Developing....

Think of it as the Mars Rover but at the bottom of the ocean, remotely exploring our own planet's most alien landscape for scientists back at mission control. "This is how the science is going to be done," said Deborah Kelley, a University of Washington oceanographer. In 2000, Kelley led an expedition using a manned submersible to explore the deep Atlantic Ocean. Her team stumbled upon something never seen before. The researchers discovered a startlingly massive collection of limestone towers located miles away from the tectonic "spreading" cracks in the seafloor that typically produce such structures. Some of these hydrothermal...

WASHINGTON, D.C. – What are the limits of organic life in planetary systems? It’s a heady question that, if answered, may reveal just how crowded the cosmos could be with alien biology. A study arm of the National Academy of Sciences, the National Research Council (NRC), has pulled together a task group of specialists to tackle the issue of alternative life forms -- a.k.a. "weird life". To get things rolling, a workshop on the prospects for finding life on other worlds is being held here May 10-11. The meeting is a joint activity of the NRC’s Space Studies Board's Task...