Mech News Today — July 19, 2026

As the world grapples with the far-reaching impacts of climate change, from wildfire haze affecting major events to energy price shocks slowing state economies, it's clear that our planet is undergoing significant transformations. In response, researchers and industries are doubling down on energy efficiency investments and innovative solutions. Meanwhile, space agencies continue to push the boundaries of exploration, with NASA's Psyche mission approaching Mars and shedding light on the Red Planet's majestic landscape.

On Earth, scientists are making groundbreaking discoveries that are rewriting our understanding of the natural world. A lost branch of Australia's marsupials has been unearthed, offering new insights into the country's rich biodiversity. In a related field, researchers have identified a rare type of meteorite that may have played a pivotal role in the extinction of the dinosaurs. And as we continue to navigate the complexities of the COVID-19 pandemic, a common antidepressant has shown promise in alleviating the debilitating fatigue associated with long COVID. These stories and more are driving a new wave of scientific inquiry and discovery, one that promises to illuminate the intricacies of our planet and the universe beyond.

Today's signal:
• Energy price shocks slow state economies; spur energy efficiency investments (phys.org)
• Image: The growing crescent of Mars as NASA's psyche mission approaches (phys.org)
• Wildfire haze hangs over eastern US—and World Cup final (phys.org)
• Scientists just discovered a lost branch of Australia’s marsupials (sciencedaily.com)
• Scientists identify the rare meteorite that killed the dinosaurs 66 million years ago (sciencedaily.com)
• Common antidepressant may ease long COVID’s crushing fatigue (sciencedaily.com)