Ship traffic in shallow areas, such as ports, can trigger large methane emissions by just moving through the water. The researchers in a study, led by Chalmers University of Technology in Sweden, observed twenty times higher methane emissions in the shipping lane compared to nearby undisturbed areas. Despite the fact that methane is a greenhouse gas that is 27 times as powerful as carbon dioxide, these emissions are often overlooked with today's measurement methods.

"Our measurements show that ship passages trigger clear pulses of high methane fluxes from the water to the atmosphere. This is caused by pressure changes and mixing of the water mass. Even if the pulses are short, the total amount during a day is significant," says Amanda Nylund, researcher at Chalmers University of Technology and the Swedish Meteorological and Hydrological Institute, SMHI.

Fuelled by climate change and relentless pressure on land and water resources, some of the most widespread and damaging drought events in recorded history have taken place since 2023, according to a UN-backed report launched today.  The report provides a comprehensive account of how droughts compound poverty, hunger, energy insecurity, and ecosystem collapse.

An unexpectedly strong solar storm rocked our planet on April 23, 2023, sparking auroras as far south as southern Texas in the U.S. and taking the world by surprise. 

Two days earlier, the Sun blasted a coronal mass ejection (CME) — a cloud of energetic particles, magnetic fields, and solar material — toward Earth. But the CME wasn’t especially fast or massive, suggesting the storm would be minor. But it became severe.

Using NASA heliophysics missions, new studies of this storm and others are helping scientists learn why some CMEs have more intense effects — and better predict the impacts of future solar eruptions on our lives.

Researchers at the School of Veterinary Medicine at the University of Pennsylvania and their collaborators examine how common food waste recycling methods, including composting, could have a huge impact on greenhouse gas emissions mitigation and the sparing of natural resources such as land and water. Food loss and waste, in particular, are “a big deal,” says Zhengxia Dou. They account for almost a third of the food produced for human consumption.