Researchers have developed a new optical sensor that provides a simple way to achieve real-time detection of extremely low levels of arsenic in water.

In 2016, we began placing tiny backpacks equipped with satellite trackers on waterbirds to find where they move to. Over the last decade, bird satellite tracking has come a long way.

Commentary: Apple's rivals are catching up when it comes to camera skills. Here's how the iPhone 17 can pull ahead.