Earth & Life Sciences

Name that cloud

By Storm Dunlop
World Meteorology Day marks a highly successful collaboration under the World Meteorological Organization, involving every country, large or small, rich or poor. Weather affects every single person (every living being) on the planet, but why do people feel meteorology is not for them? Why do they even find it so difficult to identify different types of cloud? Or at least they claim that it is difficult. The average person, it would seem, looks at the sky and simply thinks ‘clouds’. (Just as they look at the night sky and think nothing more than ‘stars’).

Carbon dioxide and our oceans

By Jean-Pierre Gattuso and Lina Hansson
The impact of man’s fossil fuel burning and deforestation on Earth’s climate can hardly have escaped anyone’s attention. But there is a second, much less known, consequence of our carbon dioxide (CO2) emissions. A large part of human-caused CO2 is absorbed by the world’s oceans, where it affects ocean chemistry and biology. This process, known as ocean acidification, is also referred to as “the other CO2 problem”.

It’s World Water Day! What are you doing to help?

Is staggering population growth and intensifying effects of climate change driving the oasis-based society of the American Southwest close to the brink of a Dust-Bowl-scale catastrophe? Today is International World Water Day. Held annually on 22 March, it focuses attention on the importance of freshwater and advocating for the sustainable management of freshwater resources. We sat down with William deBuys, author of A Great Aridness: Climate Change and the Future of the American Southwest, to discuss what lies ahead for Arizona, California, Colorado, Nevada, New Mexico, Oklahoma, Texas and Utah.

Climate change: causing volcanoes to go pop

By Bill McGuire
When I first mention to someone that a changing climate is capable of causing volcanoes to go pop or the ground to shake, they think that I am either mad or having them on. Usually, this is just because they have not given the idea much thought, so that when I am given the opportunity to explain how this works they often become quite keen on the notion. Of course, the dyed-in-the-wool climate denier ideologues are already attacking the whole thesis; not on the basis of arguments rooted in science, but because it does not fit with their blinkered world view.

Will climate change cause earthquakes?

In Waking the Giant, Bill McGuire argues that now that human activities are driving climate change as rapidly as anything seen in post-glacial times, the sleeping giant beneath our feet is stirring once again. The close of the last Ice Age saw not only a huge temperature hike but also the Earth’s crust bouncing and bending in response to the melting of the great ice sheets and the filling of the ocean basins — dramatic geophysical events that triggered earthquakes, spawned tsunamis, and provoked a series of eruptions from the world’s volcanoes.

Understanding evolution on Darwin Day

By Karl S. Rosengren, Sarah K. Brem, E. Margaret Evans and Gale M. Sinatra
Today is Darwin’s birthday. It’s doubtful that any scientist would deny Darwin’s importance, that his work provides the field of biology with its core structure, by providing a beautiful, powerful mechanism to explain the diversity of form and function that we see all around us in the living world. But being of importance to one’s field is only one way we judge a scientist’s contributions.

What mushrooms have taught me about the meaning of life

By Nicholas P. Money

Once upon a time, I spent 30 years studying mushrooms and other fungi. Now, as my scientific interests broaden with my waistline, I would like to share three things that I have learned about the meaning of life from thinking about these extraordinary sex organs and the microbes that produce them.

International Climate Policy: The Durban Platform Opens a Window

In late November and early December of last year, some 195 national delegations met in Durban, South Africa, for the 17th Conference of the Parties (COP-17) of the United Nations Framework Convention on Climate Change (UNFCCC), the latest in a series of international negotiations intended to address the threat of global climate change due to increased concentrations of carbon dioxide and other greenhouse gases (GHSs) in the atmosphere, largely a consequence of the worldwide combustion of fossil fuels, as well as ongoing deforestation.

The Story of Black Mesa

By Theda Perdue and Michael D. Green
After World War II, economic development was at the top of the agendas of virtually every reservation. Unemployment was almost universal, family incomes were virtually nil, and the tribes had no income beyond government appropriations to the BIA [Bureau of Indian Affairs]. Some reservations did have natural resources. Some tribes own important timber reserves, but mineral resources attracted most postwar attention. Thirty percent of the low-sulfur coal west of the Mississippi is on Indian land, as is 5 to 10 percent of the oil and gas and some 50 to 80 percent of the uranium. Congress enacted legislation in 1918 and again in 1938 to authorize the secretary of the interior to negotiate leases to develop tribal mineral resources.

Why the climate negotiations matter

By Matthew J. Hoffmann
Though any breakthrough in negotiations is unlikely, the multilateral meetings remain a pivotal space for the growth of innovative approaches to the coming climate crisis.

The periodic table: matter matters

By Eric Scerri
As far back as I can remember I have always liked sorting and classifying things. As a boy I was an avid stamp collector. I would sort my stamps into countries, particular sets, then arrange them in order of increasing monetary value shown on the face of the stamp. I would go to great lengths to select the best possible copy of any stamp that I had several versions of. It’s not altogether surprising that I have therefore ended up doing research and writing books on what is perhaps the finest example of a scientific system of classification – the periodic table of the elements.

SciWhys: Why are plants green?

By Jonathan Crowe
After the greyness of winter, the arrival of spring is heralded by a splash of colour as plants emerge from the soil, and trees seemingly erupt with leaves. Soon, much of the countryside has moved from being something of a grey, barren wasteland to a sea of verdant green. But why is it that so much vegetation is green? Why not a sea of red, or blue? To answer this question let me take you on a colourful journey from the sun to within the cells of plant leaves.

Do bugs feel pain?

By Jeff Lockwood
It’s hard to know what any organism experiences. For that matter, I’m not even sure that you feel pain—or at least that your internal, mental states are the same as mine. This is the “other minds” problem in philosophy. At least other people can tell us what they feel (even if we can’t be certain that their experience is the same as ours), but we can’t even ask insects.

Darwin publishes On the Origin of Species

This Day in World History
On the day it was published, Charles Darwin’s On the Origin of Species sold out—eager readers bought every single copy. This alone is not remarkable: the print run was a mere 1,250 copies. But in presenting to the world his theory of evolution by natural selection, Darwin’s tome made history.

Are daddy-longlegs really as venomous as I’ve heard?

By Jeff Lockwood
If people have told you that daddy-longlegs are deadly, then those people are dead wrong. This tale is debunked on the website of the University of California Riverside, and I trust my colleagues at UCR. I know a several of the entomologists there, and they’re a really smart bunch of scientists (a claim that one might question, given that they chose to live in Riverside, but my concern is for their entomological acumen, not their geographic aesthetics). So, I’m going to use what they say about daddy-longlegs and if you end up dying from a bite, then it’s on them.

Przewalski’s horses not ancestors of modern domestic horses

By Danielle Venton
For millions of years, the stout, muscular Przewalski’s horse freely roamed the high grasslands of Central Asia. By the mid-1960s, these, the last of the wild horses, were virtually extinct: a result of hunting, habitat loss, and cross breeding with domestic horses.