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This Day in World History
The April 25, 1953 edition of the journal Nature included a scientific paper that opened new doors in scientific understanding. The paper, written by James Watson and Francis Crick, described the structure of DNA (deoxyribonucleic acid), the substance that determines the hereditary traits of a living organism.
By Wallace Scot McFarlane
Many rivers in the United States carry the burden of having been severely polluted. Indeed all the rivers on which I have lived were once no healthier than an open sewer: the Trinity River (Dallas’s untreated sewage), the Concord River (military-industrial complex Superfund sites), the Androscoggin River (paper mills), the Charles River (“love that muddy water!”), and the Willamette River (paper mills). Although none of these rivers live up to the clean water promised by the Clean Water Act, they are nonetheless much cleaner and offer plenty of recreational opportunities, often neglected by the many people who call these watersheds home.
By Harry Ostrer
Exactly who are we anyway? Over the last generation, population genetics has emerged as a science that has made the discovery of human origins, relatedness, and diversity knowable in a way that is simple not possible from studying texts, genealogies, or archeological remains. Viewed as the successor to a race science that promoted the superiority of some human groups over others and that provided a basis for prejudice, forced sterilization, and even extermination, population genetics is framed as a discipline that is based on discovery using the amazing content of fully sequenced human genomes and novel computational methods. None of the recent discoveries would have been possible in the past. And what have we learned?
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’).
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”.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.