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Shasta Lake is the largest reservoir in California, and government officials are completing plans to make it even larger by raising the height of the dam. But the expansion has sparked intense debates among local residents, Central Valley farmers, environmentalists, tribal groups and developers.
Spotted owls have been in decline for decades, mainly due to the logging of their old growth habitat. But even now with protections and programs to help restore them, they're not bouncing back. Scientists say part of the problem is the barred owl.
Water planners are exploring the possibility of expanding Shasta Dam, a concrete slab across the Sacramento River that forms California's largest reservoir, Shasta Lake. A $1 billion proposal to raise the dam by as much as 18 and a half feet would expand the reservoir's capacity by 634,000 acre feet, enough to supply more than a million families for a year.
A new study suggests that mammals may be able to determine the gender of their offspring.