Letters from the August 12, 2006, issue of Science News | Science News

ADVERTISEMENT

MISSION CRITICAL

Support credible science journalism.

Subscribe to Science News today.


Letters to the Editor

Letters from the August 12, 2006, issue of Science News

By
6:15pm, August 4, 2006

Dates of contention

Are the dates quoted in "Stones of Contention: Tiny Homo species tied to ancient tool tradition" (SN: 6/3/06, p. 341) correct? I didn't think Homo existed as a genus 840,000 years ago.

David Adams
Boothwyn, Pa.

Fossil finds indicate that the Homo genus originated roughly 2.4 million years ago.—B. Bower

No juicy story

"Homegrown Defender: Urinary infections face natural guard" (SN: 6/10/06, p. 355) leads me to ask if this explains the efficacy of that standard home remedy for preventing urinary tract infections: cranberry juice. Does it contain a cathelicidin mimic or some irritant that (benignly) stimulates cathelicidin secretions?

Gregory Honchul
West Liberty, Ky.

There is evidence that the juice can thwart bladder infections, but the mechan

This article is available only to subscribing members. Join the Society today or Log in.

Get Science News headlines by e-mail.

More from Science News

From the Nature Index Paid Content