World's Most Expensive Cities & Universal Flu Vaccine | WEF | Top Stories of the Week

This week's top stories of the week include:

0:15 The world's most expensive cities - This list of the most expensive cities is based Worldwide Cost of Living 2022 report that compares 200 products and services in more than 170 cities. Prices in big cities have risen by an average of 8.1% in the past year. Their fastest rise for 20 years. Driven by the knock-on effects of the pandemic and Russia’s invasion of Ukraine, some of these most expensive cities have high wages and taxes, while another has an average rent of about 92% of the median worker’s pre-tax salary. Watch to know which cities are the most expensive to live in.

1:36 The era of the megalopolis has begun - Today 60% of people live in urban areas, and by 2100 it's forecast to be 85%. We are entering the era of the megalopolis. Cities around the world are merging as they grow and spread, forming supercities connected by urban sprawl. The largest megalopolis is in China - it’s known as the Greater Bay Area. But what are megapolis?

2:53 Scientists develop a universal flu vaccine - Scientists have developed a universal flu vaccine. It’s effective against all 20 known strains of flu and could help us fight off dangerous new strains before they develop into a pandemic. The new vaccine could be in use within 2 years.

3:53 This device will heat our homes sustainably - Heat pumps run on electricity rather than fossil fuels and are 3 times more efficient than gas boilers. They capture thermal energy from the air outside and use that energy to warm your home.

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