Scientists have invented a low-cost water splitter that uses a single catalyst to produce both hydrogen and oxygen gas 24 hours a day, seven days a week. The device could provide a renewable source of clean-burning hydrogen fuel for transportation and industry.
IT WAS bad enough when Pope Francis began banging on about inequality. Worse still when he changed the church’s tone when it comes to addressing gay people (“Who am I to judge?”). Now the pope has issued a papal encyclical affirming the science of climate change and calling on leaders to phase out fossil fuels from the global economy. This puts the GOP’s presidential candidates in an awkward position. At least five of them—including frontrunners Jeb Bush and Marco Rubio—are practicing Catholics. Messrs Bush and Rubio have both questioned or denied the science of climate change and rejected policies to regulate the burning of fossil fuels. And they are both from Miami, a place seen as especially vulnerable to economic damage from climate change. For some years Republicans have been accustomed to recruiting the pope as a figure of moral authority for their social agendas, especially in their arguments against abortion and gay marriage. As governor of Florida, Mr Bush regularly cited church teachings, and enacted a law to introduce anti-abortion “Choose Life” license plates. But he has seemed rather less eager for the pope’s guidance on the environment. “I don’t get economic policy from my bishops or my cardinals or my pope,” Mr Bush insisted on Tuesday. “I think religion ought to be about making us better as people and ...<div class="og_rss_groups"></div>
In addition to carbon dioxide there are plenty of other greenhouse gases. Nitrous oxide is one of them. However, a global assessment of emissions from the oceans is difficult because the measurement methods used so far have only allowed rough estimates. Using a new technology for continuous measurements, researchers have now discovered that nitrous oxide emissions from the Southeast Pacific are much higher than previously thought.
Over billions of years, the total carbon content of the outer part of the Earth -- in its mantle lithosphere, crust, oceans, and atmospheres -- has gradually increased, scientists say. The new analyses that represent an important advance in refining our understanding of Earth's deep carbon cycle.
In science news around the world, Paris's historic Musee de l'Homme is set to reopen in October after a 6-year hiatus, a joint mission of health experts says South Korea's outbreak of Middle East respiratory syndrome may now be contained, the International Energy Agency finds that nations' current promised greenhouse gas emissions cuts won't be enough to slow global warming for more than a few months, a leaked version of Pope Francis's climate encyclical reveals that the Vatican firmly blames the burning of fossil fuels for climate change, the University of Minnesota announces sweeping changes to how it will protect its research subjects, and more. Also, astronomers have spotted a bright galaxy from the early universe, possibly from the very first generation of stars. And six scientists who have spent the past 8 months in a solar-powered dome meant to simulate living on Mars—and to study how astronauts handle group conflict, bad food, and long, mundane days in cramped quarters—"returned" to Earth this week.