John Wojcik pays tribute to a black US activist who spent six decades at the forefront of struggles for voting rights, economic justice and peace – reshaping US politics and inspiring movements worldwide
DISEASES come in many guises. Before late 2019, there had never been a single case of Covid-19 and SARS-CoV-2 was an unknown virus. Now, less than a year and a half later, there have been millions of cases. In contrast, a disease like malaria has been with humans ever since we emerged as a species.
An early species of Plasmodium, the parasite which causes malaria, was found in mosquitoes that had been preserved in amber for nearly 30 million years. Yet this is no guide to a disease’s impact. During 2020, more people on the continent of Africa died of malaria than Covid-19.
While it took less than a year to develop a vaccine for Covid-19, a vaccine for malaria has proven near-impossible. However, that may be about to change.
ALEX DITTRICH hitches a ride on a jaw-dropping tour of the parasite world
A maverick’s self-inflicted snake bites could unlock breakthrough treatments – but they also reveal deeper tensions between noble scientific curiosity and cold corporate callousness, write ROX MIDDLETON, LIAM SHAW and MIRIAM GAUNTLETT


