Measurements of physiological and geometrical parameters of the sieve tube system in Ipomoea nil provide strong support for pressure driven mass flow.

Publication bias, in which positive results are preferentially reported by authors and published by journals, can restrict the visibility of evidence against false claims and allow such claims to be canonized inappropriately as facts.

Molecular genetic experiments are revealing how the fly brain generates behavioral responses to visual stimuli.

Staff from the Mayo Clinic in the US and the Karolinska Institute in Sweden describe a joint transatlantic course intended to broaden the horizons of the next generation of researchers in the field of regenerative medicine.

Early career researchers commonly peer review manuscripts on behalf of invited reviewers, often without receiving feedback or being named to the journal.

Strategies to improve public trust in biomedical research are being hindered by a scientific mindset that stifles interest in reform.

Analysis of data on drug-gene interactions suggests that decentralized collaboration will increase the robustness of scientific findings in biomedical research.

The same genes and signaling pathways control the formation of limbs in vertebrates, arthropods and cuttlefish.

Scientists should be aware of the non-empirical assumptions that influence all kinds of research.