Mountains protect the Philippines from typhoons. Why isn’t it protecting them?

When Typhoon Fung-wong roared towards Luzon this weekend, forecasts invoked grim memories of Haiyan, the 2013 superstorm that killed more than 6,000 people in the Philippines. In Metro Manila, residents braced for disaster.
But by dawn on Monday, the capital woke instead to light rain and an uncanny calm. Once again, Luzon’s Sierra Madre mountains – the island’s natural shield – had absorbed the storm’s worst blows.
Scientists and environmentalists hail the range as a silent guardian. But they…