Many populations live in environments subject to frequent biotic and abiotic changes.
Nonetheless, it is interesting to ask whether an evolving population's mean fitness can increase …

… This work was supported in part by a grant from the National Science Foundation (currently
DEB-1951307), the BEACON Center for the Study of Evolution in Action (DBI-0939454), and …

Fluctuating environmental conditions are ubiquitous in natural systems, and populations have
evolved various strategies to cope with such fluctuations. The particular mechanisms that …

Ecologists and evolutionary biologists are fascinated by life’s variation but also seek to
understand phenomena and mechanisms that apply broadly across taxa. Model systems can …

Evolutionary innovations allow populations to colonize new ecological niches. We previously
reported that aerobic growth on citrate (Cit + ) evolved in an Escherichia coli population …

… The LTEE that generated the bacteria we used in this study is supported by a grant from the
National Science Foundation (currently DEB-1951307) to Richard Lenski and Jeffrey Barrick…

Racial and ethnic minorities, older people, and women are differentially affected by chronic
pain. This study aimed to identify the experiences of adult African Americans and whites with …

… In this example, a larger number of species might have been used to define a possible
isocon passing through the points Na and Ca. This would be hard to justify geochemically. …

We have designed, prepared, and tested a new set of multidentate catechol- and polyethylene
glycol (PEG)-derivatized oligomers, OligoPEG-Dopa, as ligands that exhibit strong affinity …

Fractional quantization of the adiabatic pseudorotation in an isolated molecule is reported.
This result, concerning the large-amplitude pseudorotation in 2 2 E′ Na 3, constitutes the …