![Hamburg, Germany. 17th Nov, 2021. A bus driver types on a display and creates a passenger ticket in the 100th electric bus of Hamburger Hochbahn AG. Hochbahn intends to continue using zero-emission Hamburg, Germany. 17th Nov, 2021. A bus driver types on a display and creates a passenger ticket in the 100th electric bus of Hamburger Hochbahn AG. Hochbahn intends to continue using zero-emission](https://c8.alamy.com/comp/2H6P8C0/hamburg-germany-17th-nov-2021-a-bus-driver-types-on-a-display-and-creates-a-passenger-ticket-in-the-100th-electric-bus-of-hamburger-hochbahn-ag-hochbahn-intends-to-continue-using-zero-emission-drives-for-passenger-transport-in-the-future-credit-marcus-brandtdpaalamy-live-news-2H6P8C0.jpg)
Hamburg, Germany. 17th Nov, 2021. A bus driver types on a display and creates a passenger ticket in the 100th electric bus of Hamburger Hochbahn AG. Hochbahn intends to continue using zero-emission
![germany - What's the logic behind the the organization of Hamburg's bus transport into "rings"? - Travel Stack Exchange germany - What's the logic behind the the organization of Hamburg's bus transport into "rings"? - Travel Stack Exchange](https://i.stack.imgur.com/j5jPM.jpg)
germany - What's the logic behind the the organization of Hamburg's bus transport into "rings"? - Travel Stack Exchange
![Electronic structure of vertically coupled quantum dot-ring heterostructures under applied electromagnetic probes. A finite-element approach | Scientific Reports Electronic structure of vertically coupled quantum dot-ring heterostructures under applied electromagnetic probes. A finite-element approach | Scientific Reports](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41598-021-83583-5/MediaObjects/41598_2021_83583_Fig1_HTML.png)
Electronic structure of vertically coupled quantum dot-ring heterostructures under applied electromagnetic probes. A finite-element approach | Scientific Reports
![Time-resolved relaxation and fragmentation of polycyclic aromatic hydrocarbons investigated in the ultrafast XUV-IR regime | Nature Communications Time-resolved relaxation and fragmentation of polycyclic aromatic hydrocarbons investigated in the ultrafast XUV-IR regime | Nature Communications](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41467-021-26193-z/MediaObjects/41467_2021_26193_Fig1_HTML.png)