What began as a daring scuba adventure in the Maldives ended in horror this week after five Italian tourists never resurfaced from a deep-water cave expedition. Officials are scrambling to determine ...

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Microscopic ocean algae produce a huge share of Earth’s oxygen—but they need iron to do it. New field research shows that when iron is scarce, phytoplankton waste energy and photosynthesis falters.

THE high affinity for oxygen possessed by muscle hæmoglobin suggested its use as a very sensitive spectroscopic method for detecting and measuring small quantities of oxygen 1. This method has now ...

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Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Here’s what you’ll learn when you read this story: Scattered across an abyssal plain ...

Sensors are devices that detect and quantify physical aspects of the world around us. The measurement can either be read directly or converted to a signal for processing by electrical, hydraulic or ...