Earlier this year, a rash of studies suggested that the chemical bisphenol-A (BPA) mimics estrogen, the primary female sex hormone. Scientists speculated that BPA could be causing problems like breast enlargement and reduced sperm counts in men. Concurrent with the studies, BPA was shown to leach from plastic water bottles, the kind most of us climbers use. Camelbak was the first company to offer a BPA-free bottle and, in April, Nalgene phased out production of its Outdoor line of containers that include the chemical. Now you can get the classic 32-ounce Nalgene Loop Top wide-mouth bottle or the Camelbak Better Bottle without BPA. I'll drink to that.
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