Micro-organisms

Scientists have revived microscopic animals that had been frozen in the Siberian permafrost for 24,000 years. The Bdelloid rotifers, or “wheel animals,” went right back to moving, eating and reproducing like the Ice Age was only yesterday.

Scientists have discovered the fossil of what may be the earliest multicellular animal ever found. Dating back a billion years, the microscopic fossil contains two distinct cell types, potentially making it an ancestor to advanced animals.

An experimental study has quantified the volume of aerosol particles generated by flushing toilets in a public restroom. The real-world research suggests even with lids closed flushing toilets can increase levels of ambient aerosol particles.

Scientists have created a synthetic single-celled organism that can divide and grow like a regular living cell. This breakthrough could lead to designer cells that can produce useful chemicals on demand or treat disease from inside the body.

In what sounds like the opening of a sci-fi movie, scientists have revived microorganisms that have laid dormant for 100 million years. These microbes were found deep beneath the seafloor, where they’ve been slumbering since the age of dinosaurs.

Life continually outdoes expectations. A new study from MIT has found that E. coli and yeast can survive in an atmosphere made up of 100 percent hydrogen – and that could have fascinating implications for life on other planets.

We keep finding life thriving under conditions we’d previously ruled out. The latest example comes from studies of rock cores drilled from the floor of the Indian Ocean, where microbes were discovered alive and well under almost half a mile of rock.

New research from Harvard suggests some single-celled organisms may be capable of more complex decision-making than we give them credit for. In experiments, they were found to consult a hierarchy of options and be capable of “changing their minds.”

Scientists have found some of the earliest direct evidence of life, in the form of organic remains in 3.5-billion-year-old stromatolites in Australia.

Modern Mars is a desolate husk of a planet, as far as life is concerned. But it’s not completely uninhabitable, since microbes could be hiding in the cracks of rocks and dirt. And now a new study has found a possible food source for these organisms – space dust.

Microorganisms keep turning up in Earth’s most extreme environments. To test whether certain hardy microbes can survive the harsh conditions of space or Mars, colonies were placed on the outside of the International Space Station (ISS) for almost 18 months – and many managed to survive.

A study has taken a census of life in the “deep biosphere” beneath the Earth's surface. Among the finds are bizarre creatures that can survive at record depths, pressures and temperatures, and even “zombie” bacteria that may live (in a loose sense of the word) for millions of years at a time.