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Standing on a small concrete bridge, environmental activist Janak Daftary gestures toward the crowded banks of the Mithi River, which runs through the heart of Mumbai.

Scientists have for the first time captured the sounds of snapping shrimp off the Oregon coast and think the loud crackling from the snapping of their claws may serve as a dinner bell for eastern Pacific gray whales, according to new research by NOAA and Oregon State University presented here today.

The added weight, electricity demand and aerodynamic drag of the sensors and computers used in autonomous vehicles are significant contributors to their lifetime energy use and greenhouse gas emissions, according to a new study.

Last year was a record-breaking one for Operation IceBridge, NASA’s aerial survey of the state of polar ice. For the first time in its nine-year history, the mission, which aims to close the gap between two NASA satellite campaigns that study changes in the height of polar ice, carried out seven field campaigns in the Arctic and Antarctic in a single year.

Jellyfish blooms are becoming more widespread and scientists are looking for ways to understand them better, including their impact on species like salmon that compete with them for food sources. Now, researchers at the University of British Columbia have enlisted aerial drones to track these jellyfish clusters, their behaviours, and populations in greater detail.