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The primary goal of the FLAG SAG is to develop a coherent framework for comparing and assessing gamma-ray mission architectures. Within this framework, the SAG will:

To say something moves at a glacial pace is to imply sluggish, unhurried change. But what transpired over the course of 15 months at Antarctica's Hektoria Glacier was uncharacteristically quick. Between January 2022 and March 2023, the glacier lost about 25 kilometers (15 miles) in length. That included a two-month period in which the terminus retreated more than 8 kilometers (5 miles)--the highe…

President Donald Trump may soon feel the need to "blockade" U. S. crude oil exports after those exports hit a record high recently, a trend which, if it continues, will increase the price U. S. consumers pay for gasoline, diesel a...

Going to hyperspace? Not exactly...George Lucas had it wrong. No, I'm not talking about the prequels to Star Wars! It was something much earlier. People could be forgiven for not knowing this, but Star Wars was not George Lucas's first successful fil...

An unconformity is a gap in the recording of earth's history, similar to missing pages in a book. These breaks are more common than is realized. Stratigraphers, who organize geologic history, estimate that the time spans of non deposition exceed that of episodes of deposition. These gaps could be fleeting, as in a river meandering away and then reoccupying the old channel, or they could indicate …

Tucker Davidson of Audubon wrote a lovely piece about slowing down and listening to, and looking for, the birds:

The EmFlume1.5 is great for explaining common hydraulic phenomena in rivers. This demonstration introduces viewers to the transitions between supercritical and subcritical flow, and vice versa, and how they create some of the dynamic, impactful, and potentially dangerous points in river systems. Check it out here!

With so many worlds to explore and so much to learn about our own, funding NASA is absolutely essential....

"Mother, mother ocean, after all the years I've foundMy occupational hazard beingMy occupation's just not around"

My next post about the Geology of the National Parks Through Pictures is from our move across the country from Utah to New York. Along the way we visited 13 National Parks as well as some other sites. This was the 11th National Park along the way.

Over the years I've collected a few sightings in Oakland of actinolite, an uncommon-but-not-rare mineral in the Coast Range and Sierra foothills. This is my reference specimen, one I bought at a Russian River rock shop when I asked the owner for something local.

The through line for the western United States so far in the 2026 water year is simple: there's very little snow. With few exceptions, the mountains of the U.S. West have seen unusually little snow accumulation since October 2025, constituting a widespread snow drought. The lack of mountain snowpack has resource managers on alert going into the warmer months. Meager meltwater can affect hydropowe…

Accelerate progress in our three core enterprises — Explore Worlds, Find Life, and Defend Earth. You can support the entire fund, or designate a core enterprise of your choice.

I believe the global financial markets are now in what I would call a Wile E. Coyote moment frequently depicted in the old Warner Bros. animated series called "The Road Runner Show."  In this cartoon series a coyote while ...

Anyone who so much as drives between Australian cities these years will notice that an infestation of anti-renewable ideas has taken hold in pockets of the Australian bush. Alien hate and extremism has infected soils throughout our wide brown l...

The 2026 Day of Action brought more than 130 space advocates from 34 states and the District of Columbia to the nation's capital to advocate for space....

Accelerate progress in our three core enterprises — Explore Worlds, Find Life, and Defend Earth. You can support the entire fund, or designate a core enterprise of your choice.

From a lunar feature named after a loved one to a planet named after a god, traditions and rules guide how we name things in space....

On every crewed mission, NASA packs pouches of a potentially life-saving liquid in its cargo, known as IV (or intravenous) fluid. A simple mix of sodium chloride and purified water, it can treat up to 30% of medical conditions in flight, resolving things like dehydration, burns, and more.

I'll be at OU and the Sam Noble Oklahoma Museum of Natural History on May 8 and 9.