Letters to the Editor

Letters

Well-tooled apes The fascinating article “Aping the Stone Age” (SN: 11/21/09, p. 24) led me to wonder whether researchers who work with chimps or other higher apes have ever introduced them to the modern tools used by humans, such as saws, axes, hammers or pliers. If so, it would be interesting to know whether the […]

Letters

Outsized beaver Accompanying your recent article about giant extinct beavers (“Ancient beavers did not eat trees,” SN: 11/21/09, p. 10), there is an illustration that seems to show that the extinct beaver was about twice the length of a present-day beaver. I measured each from nose to the base of the tail rather than to […]

Letters

Plan for a long stay Lawrence Krauss’ idea of staying permanently on Mars (SN: 10/10/09, p.4)