Each week, we scour the worlds of innovation, tech for good and social impact to bring you seven of our top stories…

1. To mark World Environment Day, some of the world’s top environmental scientists, politicians and activists shared their reasons for remaining optimistic about the planet’s future with The Independent.
2. A controversial new drug for Alzheimer’s disease, Aducanumab, the first in nearly 20 years, was approved in the US.
3. A sculpture of the G7 leaders shaped like Mount Rushmore made of electronic waste was set up in Cornwall ahead of the G7 Summit to highlight the damage caused by the disposal of electronic devices.
4. Hanson Robotics, the Hong Kong team behind celebrity humanoid robot Sophia, is launching a new prototype, Grace, designed to interact with the elderly and those isolated by the Covid-19 pandemic.
5. The Mattel brand has launched Barbie Loves the Ocean, its first fashion doll collection made of recycled ocean-bound plastic, alongside a marketing campaign called ‘The Future of Pink is Green’.
6. Google has developed an artificial intelligence (AI) capable of creating computer chips in ‘under six hours,’ according to a new study, compared to the months it can take humans to design specialised chips used in AI.
7. Dengue fever cases have been cut by 77% in a trial that manipulates the mosquitoes that spread it, by infecting them with Wolbachia bacteria that doesn’t harm the mosquito, but rather ensures that the mosquito is less likely to cause an infection.