Science and Technology
36 PET bottles become the “tank” of an engine without gasoline, without diesel, and without a battery, created by students, which uses compressed air to make a tricycle move on its own at 10 km/h for up to 750 meters and demonstrates an unlikely alternative to traditional combustion.
Valdemar Medeiros 04/05/2026 at 10:42
Science and Technology
The lawnmower you know is on borrowed time; an autonomous robot that maps the entire terrain, avoids everything on its own, and works non-stop has just arrived on the Brazilian market. But while in the United States it has already become a basic item, here the price ranges from R$ 7 thousand to R$ 24 thousand and separates those who can have the future from those who will continue sweating in the backyard.
Bruno Teles 04/05/2026 at 10:40
Science and Technology
Marine scientist warns that almost half of the world’s beaches could disappear, as sea level rise and urbanization crush dunes, accelerate coastal erosion, and leave entire cities more exposed to storms, loss of tourism, and ecosystem destruction.
Valdemar Medeiros 04/05/2026 at 10:23
Legislation and Law
