A software developed in Berlin might be able to reconstitute files belonging to the GDR secret service that were torn into 600 million pieces. The ePuzzler is also being employed internationally to reconstruct destroyed files.

Electric aircraft that take off and land vertically - eVTOLs - are light, quiet and emission-free. But their battery technology is not yet good enough for longer journeys. Who will develop the first marketable model?

Japan plans to have commercial flying air taxis. Some are being developed by the start-up SkyDrive. DW reporter Cassandra Boh got to go on an exclusive tour of their secret research center.

Robots have been used to assist in medical procedures for quite some time. For example, the "DaVinci Surgical Robot" from the US is used to remove tumors from patients with prostate cancer.

Moving away from industrial robots towards personal service robots! This is the trend at big international robotics fairs like iREX in Tokyo. But can robots work closely with people?

The start-up Mira Robotics marketed the robot UGO as an alternative to a maid. Even though it has 22 sensors and three cameras for space and object recognition, it still needs to be remotely controlled by an employee.

Memes like "Bad Luck Brian"—the photo of a young man that represents persistent misfortune—are known worldwide. But there are also more multi-layered memes that only certain insiders will understand.

The darknet offers political activists worldwide protection from state repression. On it, people have the opportunity to anonymously carry out internet research, and access websites that are censored in some countries.

When officials shut down the Elysium darknet platform in 2017, there were over 111,000 user accounts. Based in Germany, the exchange platform provided pedophiles worldwide with photos and videos of severe child abuse.

Drugs make up two thirds of all offers on the dark web. Whether heroin, LSD or cannabis - these illegal intoxicants can often only be found on a single platform. Payment is made with the crypto currency Bitcoin.