Last spring, Meisa Salaita, cofounder of Science ATL, which organizes the Atlanta Science Festival, touched a human brain. “Each year during the festival, a brain is displayed,” she explains.

Hundreds of cubes of human brain tissue help scientists to chart the energy-making capabilities of various brain regions.

At the Mobile World Congress 2025, held in Barcelona until March 6, the Australian start-up Cortical Labs is causing a stir with the CL1, billed as the world's first ever commercial biocomputer.