Plants help keep us cool by absorbing CO2 - sometimes too cool.
The arrival of the first plants 470 million years ago triggered a series of ice ages, according to a research team that set out to identify the effects that the first land plants had on the climate during the Ordovician Period, which ended 444 million years ago. During this period the climate gradually cooled, leading to a series of 'ice ages'. This global cooling was caused by a dramatic reduction in atmospheric carbon, which this research now suggests was triggered by the arrival of plants.
NGC 3324, on the northern outskirts of the chaotic environment of the Carina Nebula in the constellation of Carina (The Keel, part of Jason’s ship the Argo), is about 7500 light-years from Earth and has been sculpted by many other pockets of star formation. A rich deposit of gas and dust in the NGC 3324 region fueled a burst of star birth there several millions of years ago and led to the creation of several hefty and very hot stars.
NASA's Interstellar Boundary Explorer (IBEX) spacecraft has allowed researchers to measure neutral "alien" particles entering our solar system from interstellar space; a first look at the constituents of the interstellar medium, the matter between star systems, and how they interact with our heliosphere.
If you ask Europeans about the metric system, they declare America should get with the program because it is more popular. When it comes to speaking English, however, barely a third of the EU's 500 million citizens speak English yet that is how the business of the EU's 27 member countries is conducted. No one is expected to speak 23 different languages.
Over 30 percent of all terrorist attacks from 1970 to 2008 occurred in just five metropolitan U.S. counties, according to a report published today by researchers in the National Consortium for the Study of Terrorism and Responses to Terrorism (START), a Department of Homeland Security Science and Technology Center of Excellence based at the University of Maryland and the University of Massachusetts-Boston. So what areas should you avoid, if you play the odds?
Scientists have developed a soap composed of iron rich salts dissolved in water that responds to a magnetic field when placed in solution. That's right, magnetic soap.
But there is a practical side. The generation of this property in a fully functional soap could calm concerns over the use of soaps in oil-spill clean ups and improve industrial cleaning products.