Estonia has become the first country in the world to offer free public transport to all its residents, a move the Baltic state says will not only reduce air pollution and traffic congestion, but also foster commercial activity in its city centers, according to the World Economic Forum.

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Metro fares collected by Axios from news reports, municipal websites, and PriceofTravel; Chart: Harry Stevens/Axios

Why it matters: The metro can be a touchy subject (just ask D.C. residents), and for good reason. Public transportation is a huge factor in making major cities affordable and convenient to live and work in. Combine rapid urbanization with crumbling infrastructure, and you’ve got a tricky and expensive problem to solve.

The big picture: Around the world, national and municipal governments are experimenting with ways to cope with growing transportation demands in the face of economic and environmental pressures — some more successfully than others.

  • The Estonian capital of Tallinn has offered free public transit to all registered residents of the city since 2013. The success of the program has prompted cities in other progressive EU nations, like France and Germany, to consider similar initiatives as a means of reducing air pollution.
  • In Japan "bullet trains" have set a global standard for efficiency and near-obsessive punctuality, and other Asian cities are scrambling to catch up. Tokyo Metro has secured contracts to provide operational consulting to Ho Chi Minh City, Jakarta and Manila.
  • In Seattle, Amazon invested $1.5 million last week to increase public transit capacity, adding to the $60 million total that the tech giant has invested since 2014. In its search for an American city to house "HQ2," a second headquarters expected to create 50,000 jobs, Amazon has eliminated candidates without robust public transit.
  • In Caracas, Venezuela, where inflation is expected to reach a staggering 1,000,000% by year's end, the once "punctual, efficient and clean" metro system had to stop charging its standard 4 bolívar fare after running out of paper to print tickets. The timing couldn't be worse, with demand having grown from the intended 700,000 daily riders to 2.5 million as a result of exorbitant taxi prices.

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World coronavirus updates

Data: The Center for Systems Science and Engineering at Johns Hopkins; Map: Axios Visuals

New Zealand Prime Minister Jacinda Ardern said it's too early to say whether next month's elections will be postponed after she announced Tuesday four people had tested positive for COVID-19 after no local cases for 102 days.

Zoom in: NZ's most populous city, Auckland, has gone on lockdown for 72 hours and the rest of the country is under lesser restrictions.

Updated 1 min ago - Politics & Policy

Coronavirus dashboard

Illustration: Annelise Capossela/Axios

  1. Global: Total confirmed cases as of 9:30 p.m. ET: 20,207,011 — Total deaths: 738,910— Total recoveries: 12,452,222Map.
  2. U.S.: Total confirmed cases as of 9:30 p.m. ET: 5,140,512 — Total deaths: 164,502 — Total recoveries: 1,714,960 — Total tests: 63,252,257Map.
  3. States: Georgia reports 137 coronavirus deaths, setting new daily record Florida reports another daily record for deaths.
  4. Health care: Trump administration buys 100 million doses of Moderna's coronavirus vaccine.
  5. Business: Moderna reveals it may not hold patent rights for vaccine.
  6. Sports: Big Ten scraps fall football season.
  7. World: Anthony Fauci "seriously" doubts Russia's coronavirus vaccine is safe

Voters cast ballots in Minnesota, Georgia, Connecticut, Wisconsin and Vermont

Photo: Spencer Platt/Getty Images

Primary elections are being held on Tuesday in Minnesota, Georgia, Connecticut, Vermont and Wisconsin.

The big picture: Georgia and Wisconsin both struggled to hold primaries during the coronavirus pandemic, but are doing so again — testing their voting systems ahead of the general election. Rep. Ilhan Omar (D-Minn.) is facing a strong challenger as she fights for her political career. In Georgia, a Republican primary runoff pits a QAnon supporter against a hardline conservative.