RT @HorizonMagEU: Grey whales disappeared from the Atlantic Ocean centuries ago. Several sightings of the species in the Atlantic over the past decade has inspired researchers to investigate why they disappeared and how to protect them if they make a return ➡️ https://ec.europa.eu/research-and-innovation/en/horizon-magazine/grey-whales-disappearance-atlantic-ocean-holds-clues-possible-return?pk_campaign=environment&pk_source=twitter&pk…