Summarize the variety of ways that drones can be used for

On a May night last year, Snitch gathered his surveillance1 team in a wild corner of South Africa. They waited until well after sunset before stealthily beginning their mission. Using a catapult2 powered by a bungee cord, the experts launched a small airplane over the deep and dark landscape, thick with acacia trees sporting 5-centimeter (2-inch) thorns.

Their robotic aircraft — or drone — is about as long as a bicycle and sports a 2.4-meter (8-foot) wingspan. In recent years, scientists have begun putting drones in the air to do many kinds of groundbreaking research. Drones carry no pilot, passengers or crew. They are often small and light. Some fly like an airplane, others like a helicopter or a blimp. Drones may fly autonomously (along a preprogrammed path) or under the control of a pilot on the ground.

That night in South Africa, Snitch and his team flew their drone by remote control over Kruger National Park. High in the sky, and under the cover of darkness, the Terrapin 1 flew undetected over the landscape. Though unseen, it could see perfectly. The experts scanned the ground using a special camera attached to their drone. This camera was designed to see anything that gives off heat, including elephants, rhinos — and peopl

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1)Delivery—> Drones nowadays can be used to deliver goods, like In some technologically advanced countries they are a suitable replacement for the regular delivery man. ... 3) Improving journalism—> The use of drones in journalism has made it much easier for a journalist to tell stories in a more fascinating way.

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the development of trade during the middle age increased to the change given in the agriculture, which gave money, industry and markets a bigger importance in economy. the agriculture production was more than the consumption, which meant the creation of wider markets out of the areas. besides, with the end of multiple wars, the population increased and new trade routes were created.

one of the central themes of edward abbey's work has been his staunch opposition to the glen canyon dam on the colorado river that created lake powell, destroying stunning scenery and wildlife habitat, endangering many rare species of fish and animals, and also irreparably destroying many important archaeological sites which provided information about the early inhabitants of the united states.