Most likely Al Gore no longer uses this compound as its famous for it abilities and therefore very conspicuous. He instead just hired Polar Bears to act hot and dying instead. Mainly DP is used as a mild narcotic as its really the shit when taken with cough medicine, even more so because its not regulated. As of now no mining company owns the deposits on the moon. Its also a great bullshit filter and poring it in your ears eliminates 100% of bullshit (and all sound).