As the world’s cities grow, so does the waste they produce. What do you do with it all? Downtown Berlin’s answer is a labyrinth of underground disposal tunnels.

Urban areas with over 10 million inhabitants are classed as megacities. Currently most of them are located in Asia. High birth rates and urban migration, however, have also made megacities a growing phenomenon in Africa.

Ulrike Zecher makes her living advising people on how to stand out in the online crowd by developing a snazzy personal brand. She says the process starts with self-reflection!

Individuals scramble to stand out online. Not only companies cultivate their brands, people seek to as well. How did it come to this?

Companies trademark colors associated with their brands. Infringements trigger lawsuits. Nivea loves its rich blue; Deutsche Telekom's identity is magenta. Customer loyalty and lots of money are at stake.

DW's Olaf Krieger learns a lesson: If you think you are great and are totally self-absorbed, that really turns others off.

Vehicle bans and the manipulation of exhaust emission data have driven diesel cars into disrepute all over the world. But diesel cars are less harmful to the climate than gasoline ones, so we might need them for some time yet.

DW style guru Gerhard Elfers recommends steering clear of cheap suits, if possible. His advice is to buy good quality garments secondhand or when they’re on offer. But if you do have a cheap suit, all is not lost.

Single-use plastic bags are illegal in Bangladesh, but they’re often used anyway because there’s no clear substitute for them. Now a researcher has managed to turn jute into a material that looks very similar, but is completely biodegradable.

Germany needs expertise from abroad, and a big hurdle for foreigners trying to apply for work there is getting recognition for qualifications received abroad. Tarek Khouli’s degree from Syria was finally accepted by the authorities.