Bacteria

Welcome to the 69th edition of the Carnival of Evolution! As February 12th was Darwin’s birthday, this is a Darwin’s Day carnival edition. To start with there’s a celebration of all things Darwinian at Synthetic Daisies, and a letter to the man himself for his 205th birthday.

A recently published study of a 30-pound martian meteorite found in Antarctica suggests the presence of indigenous carbon-rich material, ancient water erosion, and a number of tiny structures that resemble the sort of features that we see rock-eating microbes leaving in basaltic glasses here on Earth.

Where humans travel, bacteria will follow. If people are in space for any amount of time, bacteria are sure to thrive there so it’s good to know that there are already researchers looking at how the environment within spaceships affects bacterial populations.

When confronted with a new bacteria there are a series of simple tests that can be carried out to give a rough idea of the properties of the bacteria you are dealing with.

Like animals, plants are susceptible to infections from bacteria, viruses and fungi. While animals have a wide variety of immune cells and in some cases an interconnected immune system plants must rely on other methods to fight infection.

Research on bacterial movement tends to focus on the rod-shaped bacteria. With the aid of small waving flagella, each bacterial cell can push itself in the direction it wishes to go.

Are cows more likely to lie down the longer they stand? This apparently simple question turns out to have an unexpected answer. The study, by a team of Scottish sustainable livestock systems researchers, won the 2013 IgNobel Prize for probability and has left many people puzzled about the mysteries of cow behavior.

Last year, my New Year’s Resolution was to try for a child with my husband. As I’m currently typing while trying to entertain a three month old baby I think I can safely claim that as one of the most successful New Year’s Resolutions I’ve ever made.

The bacteria that cause syphilis and Lyme Disease have something extraordinary in common: they manage to propel themselves through their environment in spite of the fact their tails are located inside their bodies.

DNA is important stuff. It’s present in all living organisms on the planet (or ‘almost all’ if you wish to remain friends with virologists) and contains the information required to produce and organise the proteins within a cell.

Most of the meat on our dinner plates comes from cows and chickens treated with a battery of drugs that helped them grow quickly in dismal, cramped conditions that would otherwise make them sick.

Bacteria are found in large numbers all over the human body where there is a channel to the outside world, for example in the gut, lungs, and surface of the skin.