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If this lamp helps as­tro­nauts wake up and fall asleep, it can prob­a­bly do the same for you on earth

By Corinne Iozzio

Our bod­ies evolved to rise with the sun and rest with the moon, and then the light­bulb ru­ined it all. Ar­ti­fi­cial light—emit­ted by ev­ery­thing from of­fice flu­o­res­cents to phones—con­tains sun-repli­cat­ing blue wave­lengths that keep us up into the wee hours, which can po­ten­tially lead to obe­sity, de­pres­sion, and other dis­eases, as well as what a doc­tor might de­scribe as gen­eral crank­i­ness.

To rem­edy this, you could crawl into a hole ev­ery night at sun­down, a not al­to­gether un­ap­peal­ing way to avoid Wi-Fi and work e-mail; or in­vest in a smarter light source. Like the Light­ing Sci­ence Group’s new Gen­e­sis LED lamp, which emits dif­fer­ent tones at dif­fer­ent times of day to mimic the ef­fect of nat­u­ral sun­shine and twi­light. “It al­lows us to have light at night, to do things we think are use­ful—and maybe still go to sleep,” says Fred Maxik, the com­pany’s founder.

The Gen­e­sis works best when other light sources aren’t in­ter­fer­ing, but stick it on your desk or bed­side ta­ble and you’ll still reap the ben­e­fits. In our test, it was bright enough to light a room on its own and had us wide awake at 6 a.m. NASA says the tech­nol­ogy is so ef­fec­tive at reg­u­lat­ing our rhythms that it’s in­stalling a cus­tom­ized ver­sion on the In­ter­na­tional Space Sta­tion, where as­tro­nauts ex­pe­ri­ence a pos­si­bly crazy­mak­ing 16 sun­rises and sun­sets ev­ery 24 hours. $300; avail­able for pre­sale start­ing Feb. 1 at

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