The Conversation

What are macros? An exercise and nutrition scientist explains

Written by Tyler Garner, Clinical Assistant Professor of Kinesiology, University of Texas at Arlington

Most whole foods contain more than one kind of macro.carlosgaw/E+ via Getty Images

“I’m tracking my macros.”

“I’ll pass on that, it doesn’t fit in my macros.”

“I’m on the Macro Diet.”

Macros seem to come up often in the corners of the internet and social media devoted to people trying to lose...

What does 2025 hold for interest rates, inflation and the American consumer?

Written by D. Brian Blank, Associate Professor of Finance, Mississippi State University

Brian Blank is a finance scholar and Fed watcher who researches how companies navigate downturns and make financial decisions, as well as how markets process information. Brandy Hadley is a finance professor who leads a student-managed investment fund and studies corporate decision-making and incentives. Together, they’re also the resident...

From new commercial Moon landers to asteroid investigations, expect a slate of exciting space missions in 2025

Written by Zhenbo Wang, Associate Professor of Mechanical, Aerospace and Biomedical Engineering, University of Tennessee

A host of space missions are planned to launch in 2025. AP Photo/John Raoux

In 2024, space exploration dazzled the world.

NASA’s Europa Clipper began its journey to study Jupiter’s moon Europa. SpaceX’s Starship achieved its first successful landing, a critical milestone for future deep space missions. China made headlines with...

3 years after the Marshall Fire: Wildfire smoke’s health risks can linger long-term in homes that escape burning

Written by Colleen E. Reid, Associate Professor of Geography, University of Colorado Boulder

The Marshall Fire spared some homes, shown here a day later, but smoke had blanketed the area.Andy Cross/MediaNews Group/The Denver Post via Getty Images

Three years ago, on Dec. 30, 2021, a wind-driven wildfire raced through two communities just outside Boulder, Colorado. In the span of about eight hours, more than 1,000 homes and businesses...

Wildfire smoke’s health risks can linger in homes that escape burning − as Colorado’s Marshall Fire survivors discovered

Written by Colleen E. Reid, Associate Professor of Geography, University of Colorado Boulder

The Marshall Fire spared some homes, shown here a day later, but smoke had blanketed the area.Andy Cross/MediaNews Group/The Denver Post via Getty Images

On Dec. 30, 2021, a wind-driven wildfire raced through two communities just outside Boulder, Colorado. In the span of about eight hours, more than 1,000 homes and businesses burned.

The fire left...

Whales can live way longer than scientists had thought, with potential lifespans as much as double previous estimates

Written by Greg Breed, Associate Professor of Quantitative Ecology, University of Alaska Fairbanks

Animals with long lifespans tend to reproduce extremely slowly.Els Vermeulen

Southern right whales have lifespans that reach well past 100 years, and 10% may live past 130 years, according to our new research published in the journal Science Advances. Some of these whales may live to 150. This lifespan is almost double the 70-80 years they are...

Octopuses and their relatives are a new animal welfare frontier − here’s what scientists know about consciousness in these unique creatures

Written by Rachel Blaser, Professor of Neuroscience, Cognition and Behavior, University of San Diego

A common octopus (Octopus vulgaris) off Croatia in the Mediterranean Sea.Reinhard Dirscherl/ullstein bild via Getty Images

We named him Squirt – not because he was the smallest of the 16 cuttlefish in the pool, but because anyone with the audacity to scoop him into a separate tank to study him was likely to get soaked. Squirt had notoriously...

Bob Dylan and the creative leap that transformed modern music

Written by Ted Olson, Professor of Appalachian Studies and Bluegrass, Old-Time and Roots Music Studies, East Tennessee State University

Dylan and singer-songwriter Mimi Farina relax at the Viking Hotel in Newport, R.I., in July 1964.John Byrne Cooke Estate/Getty Images

The Bob Dylan biopic “A Complete Unknown,” starring Timothée Chalamet, focuses on Dylan’s early 1960s transition from idiosyncratic singer of folk songs to internationally renowned...

After Hurricane Helene, survivors have been in a race against time to protect family heirlooms, photographs and keepsakes

Written by Nick Lehr, Arts + Culture Editor

Damage and residual flooding from Mill Creek in the aftermath of Hurricane Helene on Sept. 29, 2024, in Old Fort, N.C.Melissa Sue Gerrits/Getty Images

The total damage from Hurricane Helene to North Carolina – be it physical, psychological or economic – is difficult to quantify. But the numbers reported by the Office of State Budget and...

In Disney’s ‘Moana,’ the characters navigate using the stars, just like real Polynesian explorers − an astronomer explains how these methods work

Written by Christopher Palma, Teaching Professor, Department of Astronomy & Astrophysics, Penn State

Wayfarers around the world have used the stars to navigate the sea. Wirestock/iStock via Getty Images Plus

If you have visited an island like one of the Hawaiian Islands, Tahiti or Easter Island, also known as Rapa Nui, you may have noticed how small these land masses appear against the vast Pacific Ocean. If you’re on Hawaii, the nearest...