They are autonomous vacuum cleaners that operate as carpet sweepers and vacuum cleaners at the same time. They usually return to their docking station to recharge batteries. Some models can even empty their dust containers into the docking station. Robotic vacuum cleaners are great for home use –...
Planet Earth III episode 4: Freshwater –Sunday, November 12 Fresh water is the lifeblood of planet Earth and the stage for extraordinary animal dramas. In the heart of the Costa Rican rainforest, a little-known spectacle unfolds above a very special pond. Up to ten thousand gliding tree ...
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