Think Big Pharma and you normally think fierce competition and big profits.
Now two of the world's biggest drug companies are teaming up to try to find a vaccine for Covid-19 in record time - and they are pledging not to profit from it - at least in the short term.
GSK and Sanofi are collaborating on a vaccine - one of about 80 being developed.
Seven of those are already in early stage human clinical trials - squeezing years of research into months.
Guyon Espiner has the story.
