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Data: FactSet; Chart: Chris Canipe/Axios

Platinum and palladium are two very similar metals — they sit right above each other on the periodic table, are found in the same mines, and are both used primarily in catalytic converters for automobiles. Up until 2016, their prices tended to rise and fall in unison.

What’s happening: Since Volkswagen’s diesel-gate, demand for platinum — used in diesel-fueled cars — has waned. Palladium, which is used for catalytic converters in gasoline-fueled cars, has benefited.

  • 'The price differential between palladium and platinum is historically unprecedented,” David Holmes, head of trading at Heraeus Precious Metals, tells Axios.

Fun fact: An ounce of palladium now costs more than an ounce of gold, for the first time since 2002.

Go deeper: Audi CEO arrested amid VW's pollution cheating scandal

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Updated 36 mins ago - Health

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 2 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Annelise Capossela/Axios

  1. Global: Total confirmed cases as of 8 p.m. ET: 20,188,678 — Total deaths: 738,668 — Total recoveries: 12,452,126Map.
  2. U.S.: Total confirmed cases as of 8 p.m. ET: 5,138,850 — Total deaths: 164,480 — 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.

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.