Oxford University Press's
Academic Insights for the Thinking World
An icon of the Arctic, the polar bear is a fairly common sight in the news, whether it’s because the polar ice caps are melting or because of a cute new arrival at a zoo. But how exactly has habitat loss and climate change affected the well being of polar bears?
Most of these critters belong to the Sciurus genus which is from the ancient Greek, “skia” meaning shadow or shade, and “oura” for tail. Despite the variation within these different members of the same family, the evolutionary record shows that squirrels have actually changed very little over millions of years. If it ain’t broke…
It’s an old question, at least as old as Prometheus. Are the gods indifferent or is there something in the scheme of things that cares? The ancient tale of Prometheus neatly parses its reply – yes and no. Zeus is indifferent to humanity; we are small change. But not Prometheus. His concern for our plight leads him to give us fire, which as Aeschylus explains is more than the warming flames of the hearth.
It has been known for centuries that bacteria tend to adhere to solid surfaces, forming a slimy and slippery layer known as biofilm. Bacterial biofilms are complex microbial communities protected by an extracellular matrix composed of polysaccharides, proteins, and nucleic acids. The extracellular matrix improves biofilm cohesion and its adhesion to surfaces.
Whether they’re gray or red, climbing a tree or scurrying on the ground, squirrels are one of the most ubiquitous mammals in the world. They are found in almost every habitat imaginable from tropical rainforests to deserts, avoiding only the most extreme conditions found in the high polar and arid desert regions. Different types of squirrels are indigenous to almost every continent including the Americas, Europe, Asia, and Africa.
In the 19th century, biologists came to appreciate for the first time the fundamentality of the cell to all life. One of the early pioneers of cell biology, Rudolf Virchow, realized that the discovery of the cell brought with it a new way of seeing the organism and described it as a ‘cell state’. In the 20th century, this metaphor fell out of favour, but recent trends in biology suggest a revival.
We all know Dasher and Dancer, Prancer and Vixen, Comet and Cupid, Donner and Blitzen. But do you know about the different subspecies of reindeer and caribou inhabiting the snowy climes of the extremes of the northern hemisphere? As Santa Claus travels the globe, here’s an exploration of the possible types of reindeer that are pulling his sleigh.
Microbes are everywhere. On door knobs, in your mouth, covering the New York City Subway, and festering on the kitchen sponge. The world is teeming with microbes—bustling communities of invisible organisms, including bacteria and fungi. Scientists are hard at work cataloging the microbial communities of people, buildings, and entire ecosystems. Many discoveries have shed light on how culture and behavior shape these communities.
In recent years we have seen a revolution in brewing and beer drinking. An industry once dominated by a small number of mega brands has shifted so that bars and retailers across the world are offering a seemingly endless variety of beers produced by craft or speciality breweries. In the midst of all this new […]
It’s been 25 years since more than 1,700 scientists, including a majority of the world’s living Nobel laureates in the sciences, co-signed the Scientists’ Warning to Humanity. This startling document published by the Union of Concerned Scientists, expressed concern about ozone depletion, freshwater availability, marine fishery collapses, ocean dead zones, forest loss, biodiversity destruction, climate change, and continued human population growth.
The reindeer, also known as caribou in North America, is a species of deer of the tundra and subarctic regions of Eurasia and North America. From tales of glowing red noses to debates about the physics behind their annual circumnavigation around the world, talk of reindeer is at an all-time-high this time of year. But there’s a lot more to this charismatic winter mammal than their sleigh-pulling abilities.
Over the last seven weeks, our Blue Planet II series has focused on the underwater habitats and marine life that live on “our blue planet”, featuring an assortment of captivating creatures, including manta rays, blennies, spinner dolphins, sea turtles, octopus, starfish, and whales; in many different habitats, from the darkest depths, to coral reefs, coastal tide pools, the open ocean, and underwater forests.
Pangolins, or scale-bodied anteaters, are a unique lineage of mammals exclusively feeding on ants and termites. Eight species are distributed across Africa and Asia. They all show extraordinary adaptation to myrmecophagy (specialized diet of ants and termites), including a scaled armor covering the body and tail that protects them from bites (both from bugs and large predators!)
Today, 4 December, is International Cheetah Day! Cheetahs are easily distinguished from other cats due to their distinctive black “tear stain” markings that create two lines from eye to mouth, their black spots on tawny fur, and black rings at the end of their long tails. Cheetahs also stand apart from other large cats due to their loose and rangy frame, small head, high‐set eyes, and slightly flattened ears.
At the start of the 21st century, it may come as a surprise that we still have not catalogued the detailed anatomy or traits of most plants, animals and microbes whether they are living or fossil species. That we lack much of this basic information – how species’ cells are constructed, what their physiology is like, the details of their bones, muscles or leaves – may be remarkable given that the study of comparative “morphology” (sometimes called “phenomics”) has been underway for centuries.
Museum collections are dominated by vat collections of natural history specimens—pinned insects in glass-topped drawers, shells, plants pressed on herbarium sheets, and so on. Most of these collections were never intended for display, but did work in terms of understanding the variety and distribution of nature.