Chinesische Forscher haben eine Infrarot-Kontaktlinse entwickelt, mit der man im Dunklen sehen kann. Nanopartikel machen den bislang unsichtbaren Lichtbereich sichtbar.
Czechia and Slovakia have been independent states for over 30 years. Until recently, the bond between them was extremely close. But among other things, the subject of Ukraine has driven a wedge between the two