Radioisotope power systems have powered more than two dozen U.S. space missions and can produce heat and electricity under the harsh conditions in deep space for decades without any maintenance.
Urban traffic management is a challenge for cities across Europe. Even though the number of road accidents all over the continent has been declining — last year, 4,000 fewer people died on European roads, bringing the total number of deaths to 18,800 – the figure nevertheless continues to alarm authorities.That’s why in several cities, creative ways to reduce road accidents are being tested.One such solution is 3D zebra crossings, a novelty designed to force odrivers to reassess their speed.See https://eurocities.eu/stories/managing-urban-traffic-3d-zebra-crossings-spread-across-europe/
