Purported phosphine on Venus more likely to be ordinary sulfur dioxide — ScienceDaily

In September, a team led by astronomers in the United Kingdom announced that they had detected the chemical phosphine in the thick clouds of Venus. The team’s reported detection, based on observations by two Earth-based radio telescopes, surprised many Venus experts. Earth’s atmosphere contains small amounts of phosphine, which may be produced by life. Phosphine […]

A new iron-based catalyst converts carbon dioxide into jet fuel

Today, airplanes pump a lot of climate-warming carbon dioxide into the atmosphere. But someday, carbon dioxide sucked from the atmosphere could be used to power airplanes. A new iron-based catalyst converts carbon dioxide into jet fuel, researchers report online December 22 in Nature Communications. Unlike cars, planes can’t carry batteries big enough to run on […]

The ocean’s role in past atmospheric carbon dioxide change comes into focus — ScienceDaily

The last million years of Earth history have been characterized by frequent “glacial-interglacial cycles,” large swings in climate that are linked to the growing and shrinking of massive, continent-spanning ice sheets. These cycles are triggered by subtle oscillations in Earth’s orbit and rotation, but the orbital oscillations are too subtle to explain the large changes […]

Using a soft crystal to visualize how absorbed carbon dioxide behaves in liquid

IMAGE: The CO2-absorbing soft crystal developed for this study (Photo: Shin-ichiro Noro). view more  Credit: Shin-ichiro Noro A team of scientists has succeeded in visualizing how carbon dioxide (CO2) behaves in an ionic liquid that selectively absorbs CO2. The finding is expected to help develop more efficient methods to capture CO2 in the atmosphere, one of […]

Could a human settlement on Mars be sustained with carbon dioxide?

The chemistry of carbon dioxide may not save the human race on Earth, but could enable a new beginning for life on the red planet. CO2-to-fuel facility on Mars, with rocket and fuel storage in the background. Graphic courtesy of Air Company The quandary at the center of Noël Coward’s 1930’s classic comedy Private Lives […]

Membranes for capturing carbon dioxide from the air

IMAGE: Technological solutions for the CO2 emission into the atmosphere should include variety of approaches as there is no one “silver bullet ” solution. In this work researchers from I2CNER, Kyushu University… view more  Credit: Kyushu University Climate change caused by emissions of greenhouse gases into the atmosphere is a most important issue for our society. […]

A controllable membrane to pull carbon dioxide out of exhaust streams

Credit: CC0 Public Domain A new system developed by chemical engineers at MIT could provide a way of continuously removing carbon dioxide from a stream of waste gases, or even from the air. The key component is an electrochemically assisted membrane whose permeability to gas can be switched on and off at will, using no […]

Deep-sea corals reveal secrets of rapid carbon dioxide increase as the last ice age ended

Researchers examined deep-sea coral fossils – species Desmophyllum dianthus – to study carbon sequestration in the Southern Ocean 20,000 to 10,000 years ago. The chemical signatures of nitrogen and carbon in the coral fossils revealed that ocean carbon sequestration decreased as phytoplankton failed to devour macronutrients supplied by upwelling currents in the Southern Ocean and […]