New studies are documenting trophic cascades in theoretically unlikely systems such as
tropical forests and the open ocean. Together with increasing evidence of cascades, there is …

We describe here the ecological and evolutionary processes that modulate the effects of
invasive species over time, and argue that such processes are so widespread and important …

Septic thrombosis of the cavernous sinuses (or cavernous sinus thrombophlebitis [CST]) is a
dramatic and potentially lethal illness, which is still occasionally seen by clinicians. Before …

Recent projections of climatic change have focused a great deal of scientific and public
attention on patterns of carbon (C) cycling as well as its controls, particularly the factors that …

Heterotrophic bacteria are thought to be important components of aquatic ecosystems in
several ways. These bacteria remineralize organic materials and convert some organic …

Extension of the interval between vaccine doses for the BNT162b2 mRNA vaccine was
introduced in the United Kingdom to accelerate population coverage with a single dose. At …

Designer ecosystem. In the desert southwest, natural stream flow (top) varies but may
increase substantially after large summer rainfall events. A common engineering solution …

Lake sediments are “hot spots” of methane production in the landscape. However, regional
and global lake methane emissions, contributing to the greenhouse effect, are poorly known …

Food-chain length is an important characteristic of ecological communities: it influences
community structure, ecosystem functions,,, and contaminant concentrations in top …

Here we describe a procedure for cloning pigs by the use of in vitro culture systems. Four
healthy male piglets from two litters were born following nuclear transfer of cultured somatic …