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High tech helps scientists protect whales

Scientists are delving deep into the travels of whales -- thanks to high-tech tracking devices -- to try to help protect them.Scientists are delving deep into the travels of whales -- thanks to high-tech tracking devices -- to try to help protect them. Except for a few species, global whale populations have been decimated over the last few hundred years. Many are at less than 10 percent of their original population size, following aggressive hunting in the 19th and early 20th centuries.