Q&A: What drives the rise in red tides that threaten human health?

With its striking San Francisco Bay settings, director Alfred Hitchcock’s iconic horror film “The Birds” has captivated audiences for more than 60 years. For Hitchcock, the film—set in an ocean-side town terrorized by swarming, murderous birds, was about how an unexpected threat could shatter everyday life. Today, the plot reads like a warning about our warming climate.

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