All Else

Officially called Title 42 of the U.S. Code, the little-known law was established initially in 1944 to prevent the spread of influenza and allow authorities to bar entry to foreigners deemed to be at risk of spreading the disease. Donald Trump invoked the law in 2020. It’s set to expire at the end of the year.

In 2022, water levels in some of the world’s largest rivers, including the Rhine in Europe and the Yangtze in China, fell to historically low levels. The Mississippi River fell so low in Memphis, Tennessee, in mid-October that barges were unable to float, requiring dredging and special water releases from upstream reservoirs to keep channels navigable. Earth scientists see this year’s dramatic plunge in water levels as a preview of a climate-altered future.

The cost of a fusion power plant needs to go well below the US$3.5 billion of the National Ignition Facility. These steps will require significant investment from both the federal government and private industry.

U.S. consumers waste a lot of food year-round – about one-third of all purchased food. That’s equivalent to 1,250 calories per person per day, or US$1,500 worth of groceries for a four-person household each year, an estimate that doesn’t include recent food price inflation.

We are used to thinking that going digital means going green. But driving a small car to the movie theatre with a friend may have lower carbon emissions than streaming the same movie alone at home.

Young people’s estimated 27% turnout rate in 2022 marks a near-record for an age group that has historically participated at lower rates in midterm elections. Whether this is a long-term trend or not will depend on whether communities and political groups implement the changes that research suggests can lead to sustained increases in youth voter turnout.

Divided government – including during the upcoming legislative session – will not produce greatly different legislative results than unified government, because unified government isn’t very productive in the first place: It’s really hard to get things done even when the same party controls both chambers and the presidency.

Every time you flush a toilet, it releases plumes of tiny water droplets into the air around you. These droplets, called aerosol plumes, can spread pathogens from human waste and expose people in public restrooms to contagious diseases. Here’s the visual proof.

There has been much excitement at the discovery of a treasure trove of notes from the lectures of the great German idealist philosopher G.W.F. Hegel. Before rejoicing we should ask: why does Hegel have this tricky reputation? And is it reasonable to expect that this new set of lecture notes will finally shed light on what can seem so obscure about his thinking?