<\/a>Water droplets sit on leaves following a rainy period in Interior Alaska. Chances are good that the drop of rain that splashes on your forehead, or landed on this leafe, are made of molecules that were here long before the first humans looked up in wonder at a cloudy sky. (Courtesy Photo | Ned Rozell)<\/p><\/div>\n\t\t\t\t
As in every Alaska summer, this recycled, liquid air freshener has captured billions of soot and dust particles, pulling them from the sky and slamming them quietly to the ground. Rain is also the only substance known to quench our wildfires, and it humidifies the air to the point where our noses become receptive to the delightful musk of the earth.<\/p>\n\t\t\t\t
Further, this falling liquid water is, as far as we know, unique to our home planet. This rarity highlights a most fortuitous fact: Earth orbits the sun at about 93 million miles, a favorable distance for a species that for its comfort depends on both air conditioning and down jackets. We live far enough away from the sun to keep our flood-swollen rivers from boiling away, yet close enough to keep all this precious moisture from being locked up, unusable, in a hard shell of ice.<\/p>\n\t\t\t\t
• Since the late 1970s, the University of Alaska Fairbanks’ Geophysical Institute has provided this column free in cooperation with the UAF research community. Ned Rozell is a science writer for the Geophysical Institute. A version of this column ran in 2010.<\/em><\/p>\n\t\t\t","protected":false},"excerpt":{"rendered":"Rain is, after all, the free distribution of a substance more valuable than gold. <\/p>\n","protected":false},"author":106,"featured_media":61457,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_stopmodifiedupdate":false,"_modified_date":"","wds_primary_category":9,"footnotes":""},"categories":[9,4],"tags":[149],"yst_prominent_words":[],"class_list":["post-61456","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-home","category-news","tag-outdoors"],"_links":{"self":[{"href":"https:\/\/www.juneauempire.com\/wp-json\/wp\/v2\/posts\/61456","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.juneauempire.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.juneauempire.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.juneauempire.com\/wp-json\/wp\/v2\/users\/106"}],"replies":[{"embeddable":true,"href":"https:\/\/www.juneauempire.com\/wp-json\/wp\/v2\/comments?post=61456"}],"version-history":[{"count":0,"href":"https:\/\/www.juneauempire.com\/wp-json\/wp\/v2\/posts\/61456\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.juneauempire.com\/wp-json\/wp\/v2\/media\/61457"}],"wp:attachment":[{"href":"https:\/\/www.juneauempire.com\/wp-json\/wp\/v2\/media?parent=61456"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.juneauempire.com\/wp-json\/wp\/v2\/categories?post=61456"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.juneauempire.com\/wp-json\/wp\/v2\/tags?post=61456"},{"taxonomy":"yst_prominent_words","embeddable":true,"href":"https:\/\/www.juneauempire.com\/wp-json\/wp\/v2\/yst_prominent_words?post=61456"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}