Nosooner has a [synthetic] drug been blacklisted than chemistsadjust their recipe and startchurningout a subtlydifferent one. These “legal highs” are sold for the fewmonths it takes the authorities to identify and ban them, and then the cyclebeginsagain.
Likemosthumanactivities, ballooning has sponsoredheroes and hucksters and a gooddealin between. For everydedicatedscientistpatientlyrecordingatmospheric pressure and wind speed while shivering at highaltitudes, there is a carnivalbarker with a bevy of prettygirlswilling to dangle from a basket or parachutedown toearth.
high (i.e. intense) heat; high (i.e. full or quite) noon; high (i.e. rich or spicy) seasoning; high (i.e. complete) pleasure; high (i.e. deep or vivid) colour; high (i.e. extensive, thorough) scholarship