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Disease Update

Your cells are dying. All the time.

Some go gently into the night. Others die less prettily in freak accidents or deadly invasions, or after a showy display.

Know thine enemy: Why genetic sequencing is key to tracking Covid-19

The US effort to analyze viral genomes, slow to start, is now picking up speed

A year of missing tests

Standardized tests for K-12 students were largely dropped during Covid, leaving a gaping hole in our understanding of students’ progress.

Kids of the Covid generation: The road ahead

What will become of children growing up during the pandemic? There’s reason for concern, but the research on resilience is reassuring. A developmental psychologist explains what adults can do to protect youngsters from long-term harm.

Animal CSI: Forensics comes for the wildlife trade

Scientists are using the latest in DNA fingerprinting to combat the multibillion-dollar business of trafficking plants and animals

What is a cytokine storm?

An immune reaction gone wild seems to be linked with the most severe cases of pandemic Covid-19. Here’s what happens.

Friendly fire: How autoantibodies could drive severe Covid

Some serious cases of Covid-19 are linked with the immune system’s attack on the body it’s trying to protect

From tiger scat to DNA to — hopefully — survival

Researchers dig out the elusive cats’ genetic material where they can, to guide efforts at conservation and diversity

CRISPR gene editing: Moving closer to home

With the first medical therapy approved and systems like CRISPR-Cas showing up in complex cells, there’s a lot going on in the genome editing field. Here’s our primer.

Viruses that roam the fungal kingdom

Mushrooms and other fungi can harbor hidden companions — and some of these may fight pesky or dangerous molds

How rogue jumping genes can spur Alzheimer’s, ALS

Our genomes are peppered with DNA segments called retrotransposons that can move from place to place. When unleashed, some can kill nerves and promote inflammation — a discovery that may inspire treatments for neurodegeneration.

Worm-inspired treatments inch toward the clinic

Infection by certain wrigglers may reduce inflammation and fight obesity and diabetes. Scientists are at work to turn the findings into therapies.

All about cholesterol

The latest science on how blood levels of HDL, LDL and more relate to cardiovascular health

Civilizations of Africa through a new lens

Small settlements and the scourge of slavery left gaps in Africa’s archaeological record. Yet sites and artifacts are revealing clues to the continent’s more recent history. An archaeologist explains the findings and threats to this heritage.

The phageome: A hidden kingdom within your gut

Human innards are teeming with viruses that infect bacteria. What are they up to?

Journey to the egg: How sperm navigate the path to fertilization

COMIC: Male cells must survive twisty passages, strong currents and immune attacks; millions enter, but only one can finish

A warmer planet, less nutritious plants and … fewer grasshoppers?

Higher levels of carbon dioxide are changing micronutrients in grasses, trees and even kelp. What does that mean for animals higher up the food chain?

Pathways to a cure for AIDS

Medications can control HIV, but not eliminate it. Scientists hope to one day vanquish it completely.

Viruses that come to stay

Some linger in the body for a lifetime. The one causing Covid-19 probably isn’t one of them, but it and others can create mischief long after the immune system appears to have banished them.

Progress fighting pancreatic cancer — one of the deadliest malignancies

Better outcomes may come from new drugs, strategies to rev up the immune system and learning to identify the disease sooner in its course

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