Explainer
Why reproducibility has become one of science's central concerns
A finding that cannot be repeated is a weak foundation. Researchers are changing how they design, share and review studies to make results sturdier.
Hiroshi Tanaka
Demonstration profile. Hiroshi Tanaka writes about research, space and how science gets done.
Articles by Hiroshi Tanaka
Explainer
How health systems decide which treatments to pay for when budgets are finite
Every health budget involves rationing, whether openly or not. Formal assessment methods try to make those choices consistent, transparent and defensible.
Science
The new race for low Earth orbit
Thousands of satellites now circle the planet. Managing the traffic has become one of space policy's most urgent problems.
Explainer
How clinical trials are designed to tell whether a treatment really works
Proving that a medicine helps is harder than it sounds. Randomisation, control groups and blinding exist to separate genuine effects from chance, hope and bias.
Explainer
Why the same medicine can cost very different amounts from one country to the next
Drug prices reflect not just production costs but bargaining power, regulation and the way companies recover the cost of research.
