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The electronic pill is fixed with ingestible micro-sized biomedical sensors.
People can dump their plastic waste at specific places outside the hotel and can fill their water bottles without paying money under the green.
In just 2018, more than 20 elephants have died on railway tracks.
Several dangerous additives are added to many food products to improve their shelf life or to attract customers.
Delhi Water Board has already placed an order for 200 Hope machines.