Global water scarcity might worsen, if a new study is accurate. The glaciers of the world seem to be containing significantly less ice than thought previously, according to the study.

World Glacier melting update: There's less ice in them than estimated earlier, says study

The 'Predator Guardian' drones can fly at 50,000 feet non-stop for over 24 hours and monitor the movement of objects as small as a football

India seeks to buy estimated 250 US drones for over $5 billion

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