Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
The Pentagon's plans for the future of SDI should carry little weight with the next US administration, which should not think of affording even the half-price version now on offer.
Palaeontologists have buried the hatchet of cladism, to the general enlightenment. But the siege mentality at a meeting last month argues for the preservation of comparative anatomy.