Solving Shared Problems at the Food, Energy, and Water Nexus

The United States and China are the largest economies in the world, producing and consuming much more food, energy, and water (FEW) resources than other countries. Consequently, these countries exert substantial impacts on the environment and climate and thus on global sustainability. The two nations have, of course, taken very different paths to […]

How much will Africa’s growing power grid rely on renewable energy?

solar thermal power plant in Morocco

Africa’s electricity capacity is expected to double by 2030 — and with the rapidly dropping cost of renewable energy technologies, the continent might seem poised to go green. But a new analysis suggests that fossil fuels will still dominate Africa’s energy mix over the next decade. The scientists used a machine learning approach that analyzes […]

Monster black hole spews energy as regularly as Yellowstone’s ‘Old Faithful’

At the heart of a galaxy more than 570 million light-years away, energy flares into space so consistently that astrophysicists have dubbed the galaxy Old Faithful, like the famously predictable geyser in Yellowstone National Park. This is the first time such regular and frequent flares have been spotted emanating from a distant galaxy’s core. About […]

An anode-free zinc battery that could someday store renewable energy

Renewable energy sources, such as wind and solar power, could help decrease the world’s reliance on fossil fuels. But first, power companies need a safe, cost-effective way to store the energy for later use. Massive lithium-ion batteries can do the job, but they suffer from safety issues and limited lithium availability. Now, researchers reporting in […]

Giant 2D atlas of the universe helps dark energy spectroscopic survey

IMAGE: Sky distribution of the latest DESI imaging data release from the website of the DESI imaging legacy surveys. The enlarged image is part of the sky showing the DESI spectroscopic… view more  Credit: DESI website The Beijing-Arizona Sky Survey (BASS) team of National Astronomical Observatories of Chinese Academy of Sciences (NAOC) and their collaborators of […]

Could we harness energy from black holes? A new study indicates energy can be extracted from black holes through reconnection of magnetic field lines — ScienceDaily

A remarkable prediction of Einstein’s theory of general relativity — the theory that connects space, time, and gravity — is that rotating black holes have enormous amounts of energy available to be tapped. For the last 50 years, scientists have tried to come up with methods to unleash this power. Nobel physicist Roger Penrose theorized […]

Energy sorghum may combine best of annual, perennial bioenergy crops

by Julie Wurth, University of Illinois at Urbana-Champaign Institute for Sustainability, Energy, and Environment CABBI researcher Caitlin Moore, standing here in an Illinois sorghum field, was a lead author on a study that found annual energy sorghum behaved more like miscanthus than maize in the way it captured light and used water to produce abundant […]

Researchers propose a framework for evaluating the impacts of climate change on California’s water and energy systems

Hydroelectric stations like Shasta Dam, along the Sacramento River, are integral to California’s water and energy needs. Credit: U.S. Bureau Of Reclamation As the planet continues to warm, the twin challenges of diminishing water supply and growing energy demand will intensify. But water and energy are inextricably linked. For instance, nearly a fifth of California’s energy […]

Learning energy efficiency networks in Argentina

The Argentinean experience can inform experts on LEEN efforts to make industrial sectors more energy efficient in developing regions. Image credit: Ant Rozetsky Unsplash As stated by the International Energy Agency (IEA) in the Tracking Industry 2020 report, even though direct industrial CO2 emissions, including process emissions, declined 0.6% in 2018 (representing 24% of global […]

Is there more than one dark energy?

Paul M. Sutter is an astrophysicist at SUNY Stony Brook and the Flatiron Institute, host of Ask a Spaceman and Space Radio, and author of How to Die in Space. He contributed this article to Space.com’s Expert Voices: Opinions and Insights. We don’t know what’s behind dark energy, the name we give to the current […]