Alzheimer’s is considered by many to be one of the most terrifying diseases because it slowly erodes a person's core identity, memories, and independence, while offering no cure or way to reverse its devastating cognitive decline. More than 7 million Americans live with Alzheimer’s disease, with health and long-term care costs for Alzheimer’s and other forms of dementia projected to reach nearly $400 billion in 2025, according to the Alzheimer’s Association.

For years, doctors relied only on written memory tests, invasive spinal taps and expensive imaging to diagnose the disease. But now, two FDA-cleared blood tests are simplifying the diagnosis. This is important because estimating the onset of symptoms could not only help people prepare but also speed up development of preventive treatments, too.

The new tests, which use different methods and report results in different ways, can help evaluate patients with early signs of cognitive decline, neurologists say, but they aren’t designed to predict Alzheimer’s risk in healthy people. Not yet, anyway. “Until there is a treatment for asymptomatic people, this will probably not be a routine health check,” one doctor told the Wall Street Journal. Especially since there are still no approved treatments to prevent the onset of the disease.

But, whether doctors want people to get these tests or not, the demand is there. Doctors say they are fielding more requests for these tests from healthy, symptom-free patients, many of whom have a family history of Alzheimer’s or dementia. A 2025 survey from the Alzheimer’s Association found that 91% of Americans would want to take a simple test, like a blood test, to know if they had the disease. Consumers are increasingly seeking access to and knowledge about their own health. The proliferation of wearable devices, direct-to-consumer testing, and more personalized forms of care, such as concierge medicine, has made it easier to do so.

Research into whether Alzheimer’s tests and treatments can help prevent or delay the disease is accelerating. There is a growing body of evidence supporting certain behavioral changes to promote brain health, such as eating a healthy diet, not smoking, and limiting alcohol.

President Donald Trump said Monday that the Strait of Hormuz will fully reopen to shipping traffic by Friday, the day that senior U.S. and Iranian officials plan to meet in Geneva for a ceremony to mark an end to the four-month war and kick off weeks of negotiations about Iran’s nuclear program.

But core elements of an enduring agreement remained unresolved and subject to talks over the next two months, officials said, with the substance of Iran’s nuclear ambitions punted to future negotiations to speed the reopening of the shipping bottleneck. Vice President JD Vance told NBC News that nuclear inspectors “absolutely will return” to Iran under the terms of the deal, but the start date would still need to be hashed out.

CIA Director John Ratcliffe told President Trump and other senior officials that evidence gathered by U.S. intelligence agencies raises serious doubts about Iran’s willingness to make the nuclear concessions the U.S. is seeking in any final deal. Axios reports that Ratcliffe isn’t the only skeptic in Trump’s top team. In internal discussions, Secretary of State Marco Rubio and Secretary of Defense Pete Hegseth both expressed concerns and raised questions about the terms of the deal.

Despite President Trump boosting coal over clean energy, solar power is hitting new milestones in the U.S. and remains the leading source of new power in America.

Data released last week by global energy think tank Ember, along with a report by the Solar Energy Industries Association and analytics firm Wood Mackenzie, show the continued growth of solar and decline of coal in the United States despite federal policy. In May, for the first time, solar supplied more of the nation's electricity than coal, or 12.8%, Ember said. Coal supplied 12.2%, its fourth-lowest monthly share ever.

ABC News reports that electricity demand continues to surge, especially from tech companies seeking to secure power sources to meet the growing demands of AI and the data centers that run them, according to the report. There is currently enough solar installed in the U.S. to power about 50 million households, according to SEIA. By 2034, there will be enough solar capacity to power 100 million households. And there’s still more innovation just around the corner.