microbiology

Fun Cryo Facts – Don’t eat brown snow

Stefan “Zwiebel” Thiele December 2, 2022

What about digging a snow pit on the Arctic sea-ice during a stormy day? Sure, for science this and more! [credit: Stefan Thiele]

Scientist are curious people and we all know that the best discoveries happen by chance, so we always keep our eyes open for the unusual, the new, and the weird things in life. Especially, when we are out in the Arctic doing field work and find unknown brown layers… An unexpected discovery We were out in the Arctic, somewhere Northeast of Svalbard. It was a sunny day and we had just docked t ...[Read More]

It’s getting hot in here: Ancient microbes in thawing permafrost

Maria Scheel October 22, 2021

Figure 1: You wondered what can live in frozen, ancient soil? Here you can see intact (A) and thawing permafrost (B). While Bacilli (red) and spore formers (green) can survive in the frozen and thawed permafrost, other species, such as Actinobacteria (blue) do not like it too much when it thaws. Carbon gets digested into carbon dioxide (CO2) and methane (CH4), of which most is released into the atmosphere. Little is known about fungi (light brown) but they do exist. [Credit: Maria Scheel, created with biorender.com]

Did you know that the oldest organism on Earth is believed to be a microorganism found in 3-million-year-old permafrost in Siberia? There, it was living at a cosy average temperature of -10 °C at 14 m depth. Or did you hear that some other Arctic soil microorganisms can happily live at extreme temperatures down to -40 °C? Scientists often use these “extreme” microorganisms to get an idea on how ex ...[Read More]

Surviving in cold environments: from microbes under glaciers to queer scientists in the current social context

Mario Toubes-Rodrigo July 5, 2019

A rainbow shines brightly over glaciers in Tarfala Valley, in the Swedish Arctic. The rainbow, a natural and colourful phenomenon, has become a symbol of pride in the LGBTQ+ community [Credit: Mario Toubes-Rodrigo].

On the 5th of July we will celebrate the International Day of LGBTQ+ (lesbian, gay, bisexual, transsexual, queer, and people that do not identify themselves as cis and/or straight) People in Science, Technology, Engineering, and Maths (STEM). Many people will ask: “Why is this day important?” Being a queer scientist in particular, and a queer person in general, can sometimes reminds us of how livi ...[Read More]

Image of the Week – Cure from the Cold?

Aliyah Debbonaire May 11, 2018

Fig. 1: A sample of ‘cryoconite’ from glacier surfaces contains a diverse collection of bacteria and fungi that may be sources of new antibiotics [Credit: A. Debbonaire].

Humans rely on antibiotics for survival, but over time they are becoming less effective. So-called ‘superbugs’ are developing resistance to our most important drugs. The key to this global issue may be found in the cryosphere, where extreme microbiologists are hunting for new compounds in the cold that could help us win the war against antimicrobial resistance. Discovering drugs in Earth’s coldest ...[Read More]

Image of the week – Micro-organisms on Ice!

Tommaso Santagata August 11, 2017

Figure 1: Investigating micro-organisms on Perito Moreno. Left – Sampling on the glacier surface inside a cryoconite hole. Right – Scientists from the University Bicocca of Milan at work performing analysis in the temporary laboratory set up in Buscaini Refugee (shelter) [Credit: Alessio Romeo – La Venta Esplorazioni Geografiche]

The cold icy surface of a glacier doesn’t seem like an environment where life should exist, but if you look closely you may be surprised! Glaciers are not only locations studied by glaciologists and physical scientists, but are also of great interest to microbiologists and ecologists. In fact, understanding the interaction between ice and microbiology is essential to fully understand the gla ...[Read More]