You’re fully vaccinated? The CDC says you can now have friends and family over for dinner.

You’ve been fully vaccinated: two doses of the Moderna or Pfizer vaccine, or the single-dose Johnson & Johnson vaccine, plus several weeks for your immune system to fully respond. Now what can you do? New guidelines from the Centers for Disease Control and Prevention published Monday, March 8, offer good news: You can see your …

The Senate just took a step toward actually lowering US greenhouse gas emissions

The Senate on Wednesday took an important step forward on limiting emissions — and meeting its commitments to curb global warming — by voting to limit the unbridled release of methane molecules, often a byproduct of natural gas production, into the atmosphere. The 52-42 vote reinstates the Oil and Natural Gas New Source Performance Standards, …

Will Covid-19 vaccines protect you against variants? 9 questions about variants, answered.

The Covid-19 pandemic now appears to be the worst it has ever been, with daily new cases worldwide topping 800,000 several times over the past week. More new cases have been reported in the past two weeks than in the first six months of the crisis. More than one in three of these new cases …

Biden agreed to waive vaccine patents. But will that help get doses out faster?

Click Here: The Biden administration has announced that it will work with the World Trade Organization (WTO) to negotiate a deal to suspend intellectual property rights associated with the Covid-19 vaccines — a surprise move for the administration, which had initially resisted taking such a step. The reversal came as Covid-19 deaths are mounting in …

How the world missed more than half of all Covid-19 deaths

The world may have undercounted Covid-19 deaths by a staggering margin, according to an analysis released Thursday by the Institute for Health Metrics and Evaluation (IHME) at the University of Washington School of Medicine. The actual count may actually be 6.9 million deaths, more than double official tolls. The United States alone is estimated to …

Why India needs oxygen more urgently than vaccines

While here in the US some are tentatively removing their masks and resuming small outdoor gatherings, others around the world are searching for air. In India, people need oxygen, and they need it now. Last week, Covid-19 became India’s No. 1 killer. One million people in a country with a population of 1.3 billion are …

Covid-19 proved bad indoor air quality makes us sick. We can fix that.

If a waiter at a restaurant brought you a murky, stinky glass of water, that would be unacceptable. But yet, many waiters — at least before the Covid-19 pandemic hit — were forced to breathe poorly ventilated air in restaurants and other indoor spaces where people packed together. And still today, “if anybody asks a …

Vaccine passports can liberate America

Now that the Centers for Disease Control and Prevention (CDC) has said that people who have been vaccinated against Covid-19 can shed their masks, there are obvious questions: How do you verify that people are vaccinated? Especially in situations in which some people can’t get vaccinated, including young children, or may remain vulnerable after, like …

Our amazing sense of touch, explained by a Nobel laureate

Before 2010, scientists knew very little about how the sensation of touch begins its journey into a person’s consciousness. They knew that nerve endings help carry the message from different parts of our bodies to our brains. But they didn’t know what kind of receptor on the nerve ending causes the message to fire — …