Climbers braving the world's tallest peak were allegedly encouraged to take pricey helicopter rides down the mountain after being spiked with baking soda, Nepalese police claim Climbers braving the world's tallest peak were allegedly encouraged to take pricey helicopter rides down the mountain after being spiked with baking soda, Nepalese police claim Mount Everest climbers were poisoned by fraudster guides as part of a sin... [2853 chars]