Contract delay: what is it and how are we performing?

Evolvability: What Is It and How Do We Get It?

Cytogenetic biodosimetry: what it is and how we do it.

Dicentric assay is the international gold standard for cytogenetic biodosimetry after radiation exposure, despite being very labour-intensive, time-consuming, and highly expertise-dependent. It involves the identification of centromeres and structure of solid-stained chromosomes and the enumeration of dicentric chromosomes in a large number of first-division metaphases of cultured T lymphocytes...

Zero: what is it, and how do we get there?

Zero: What is it, and how do we get there?.

What is speciation and how should we study it?

To understand speciation, we first need to know what species are. Yet debates over species concepts have seemed endless, with little obvious relevance to the study of speciation. Recently, there has been progress in resolving these debates, favoring a lineage-based, evolutionary species concept. This progress calls for reconsideration of the study of speciation. Traditional speciation research ...

Evidence-based medicine: what it is, what it isn't, and are we practicing it?

W hear a lot these days about the concept of ‘‘evidence-based medicine.’’ Six years ago, one of our most illustrious and intelligent presidents also made it the subject of a presidential address. I will cover a little of the same ground, but bear withme andwewill sail into some different seas, as I will address the use of nonYevidence-basedmedicine in some aspects ofmodern medical care, rather ...