MAUNA LOA OBSERVATORY , HAWAII — There are just a few moments from my past times that , having left an indelible mark on my life , I can now return to in an heartbeat . My first dance at my hymeneals to “ I Only Have Eyes for You . ” The speech sound call I received , as I dressed to go to work , telling me my female parent had died . spread my college espousal letter with a crisp roue of the gasbag .

These are life - altering highs and low gear . When Aidan Colton — a research scientist I had conform to for the first time just hr in the beginning — handed me a methamphetamine globe encased in tape , that simple rally became another one of those memories . It may seem odd that a stranger could affect me so profoundly , but what Colton handed me was more than a trinket . It was a flask filled with the very rummy time we live in , heavy as all of human chronicle . Standing there in the searing sunlight on the side of a volcano , I held everything for a brief moment .

The Mauna Loa Observatory , located smack in the center of the island of Hawaii , is one of the most sacred berth in science . Researchers there measure a variety of gas in the ambience , but none more important than carbon dioxide . As we enter a crucial decade in human account , the information collected in field glass flasks at Mauna Loa is more than just numbers in a logbook : it ’s a phonograph record of human success — or unsuccessful person .

A tower at Mauna Loa Observatory that samples various atmospheric gases.

A tower at Mauna Loa Observatory that samples various atmospheric gases.Photo: Brian Kahn (G/O Media)

While I ’m not inclined to mysticism , I find it firmly not to experience mystifying reverence for Mauna Loa Observatory and the Keeling Curve , the record that made it illustrious . When I strive out to see if I could visit , I carry to have to jump through a million hoops . or else , I just filled out a wide-eyed Google Form and exchanged a span emails with Colton , who provided direction for the drive from the seaside Ithiel Town of Hilo to the observatory sited at 11,135 foundation above sea level . I plant out at the crack of daybreak , twine my mode through verdant tropical forests into the sear moonscape of Mauna Loa . My married woman , a fellow climate grind , came along for the drive .

The Keeling Curve , which Colton sour on at the observatory , is part of the bedrock of climate scientific discipline . Charles Keeling , a Scripps researcher and the curve ’s eponymous Jehovah , began hold carbon dioxide measurement on the flanks of Mauna Loa in 1958 . Sitting in the middle of the Pacific Ocean and sweep clean by barter winds , Mauna Loa is one of just a handful of places on Earth where it ’s possible to capture a well-defined snapshot of the atmosphere . Here , scientists can track carbon paper dioxide in measurements of parting per million .

The everyday measurements were ab initio meant to dog the Earth ’s breathing patterns as plants bloom and take up up atomic number 6 dioxide in the fountain and summer and then expire and decompose , releasing atomic number 6 dioxide back into the atm in free fall and winter . But as the record grew , it became clear that the Earth was n’t emit normally . It was being choked by increasing carbon dioxide from human activities . Nearly two - thirds of all atomic number 6 pollution has been dumped into the atmosphere since I was put up in 1981 .

Picarro software analyzes carbon dioxide concentrations in a sample at Mauna Loa Observatory. The NOAA carbon dioxide record is visible in the background.

Picarro software analyzes carbon dioxide concentrations in a sample at Mauna Loa Observatory. The NOAA carbon dioxide record is visible in the background.Photo: Brian Kahn (G/O Media)

The Keeling Curve is the individual clearest indicator of the stress humans have put on the satellite . In 2015 , it was dubbed anational landmarkby the American Chemical Society . It ’s madeappearances in congressional testimony , it showed up in Al Gore ’s An Inconvenient Truth , and it ’s regularly in the news , particularly at this time of year , because May is the calendar month of peak carbon dioxide . As long as human activities keep utter the natural gas , every yr is bound to see a newfangled made - for - the - headlines record .

The menace implied by the breaking ball ’s jagged , rise seesaw is n’t specifically what drew me to climate scientific discipline . or else , it was something far more mundane and personal : I was a ski can worried about snow disappearing . But in the days since , I have n’t been able-bodied to shake the impulse to natter the site of Keeling ’s work .

Part of it was a nerdy pastime in science story akin the lot of Bunker Hill for a Revolutionary War buff , but there was also a desire to feel something . The world ’s unshackled carbon dioxide emissions have ushered in an era of great unraveling . Still , this unprecedented world-wide event can feel oddly distant , the grownup picture always just out of view .

A glass globe holding that day’s Keeling Curve measurement.

A glass globe holding that day’s Keeling Curve measurement.Photo: Brian Kahn (G/O Media)

Carbon dioxide is invisible . The aura is everywhere . Mass experimental extinction , collapsing ice , and acidifying sea are consequence we all must live with , but as concepts , they ’re unmanageable to grasp . While I wrap up these subject every Clarence Day and exist in the same earned run average as everyone else , clime change stay maddeningly distant .

Visiting Mauna Loa Observatory feel like a chance to , at least briefly , take everything in . The observatory is now be given by the National Oceanic and Atmospheric Administration , which is the agency Colton work on for . Colton himself is up at the observatory roughly three day a workweek . Every morning he ’s there , he goes to the same spot on the fringe of the quickness battered by sear ultraviolet radiation rays ( and the occasional tropic blizzard ) to take the day ’s measurements .

The Clarence Shepard Day Jr. I was there was a distinctive one for Colton or any of the other researchers who give to keep the record . First , he draw out a briefcase - like kit from the bole of a government SUV . Opening the briefcase , he then deploy an antenna with a tube-shaped structure that snaked up it to roll up the first sample . Next , he flipped a permutation and walked aside , allowing the flasks inside to fill with rarified aviation . The sample would by and by be analyse on - site and supply to the NOAA record . ( On that day , the C dioxide concentration was 409.1 character per million . )

Aidan Colton holds his breath as he takes one of two Keeling Curve samples for the day. The day’s NOAA sampling equipment is visible in the background.

Aidan Colton holds his breath as he takes one of two Keeling Curve samples for the day. The day’s NOAA sampling equipment is visible in the background.Photo: Brian Kahn (G/O Media)

The Keeling Curve measuring are made using a dissimilar set of containers . Colton reached into the back of SUV again , pulling out the first of two vacuum - sealed glass spheres covered in magnetic tape . The tape block out the sun , which can cause changes to the gun once they ’re lactate into the flasks , and also keep them from shattering into a million un - gatherable piece if the welkin implodes . These are the same eccentric of flasks Charles Keeling used .

Unlike the first , semi - automated sampling cognitive process , this measure is taken using some old school scientific discipline . Colton had to walk to an open blank and immerse a small possibility in the flaskful that broke the seal , sucking in air . Because human race emanate carbon dioxide , he held his breath before and after breaking the sealing wax , which is no small effort at 11,135 feet . Once capped , the sample is send back to the mainland for analysis , another little stop in the menacing sawtooth of the Keeling Curve .

Watching Colton try the sky made the Keeling Curve experience more concrete and the worldwide clime in general more tangible . I asked the investigator if I could snap him holding the flask , its pear-shaped bod and white tape measure contrasting sharply with the busted , mordant lava rock . He kindly obliged .

How To Watch French Open Live On A Free Channel

He then asked if I wanted to carry the sample . To tell the trueness , I have take hold babies with less anxiety than I palpate as he handed me the glass revolve . Like a new driver with their fingers glue at 10 and 2 , I kept both hand on the flask at all multiplication . Tactilely , it was like an over - inflated volleyball . The tape felt soft from month , maybe years , of being handled as samples were carry , packed and shipped across the Pacific , empty and analyse , and the flask was sent back to Hawaii for reuse .

It may not have looked like much , but I was gripping much more than just a worn patch of lab equipment between my fingers . All the world ’s efforts were trapped inside this tiny Earth . Here in my hands were Exxon ’s lies , a million clime strikers ’ pleas , me and my flight across the Pacific . Here was the fortune of the West Antarctic ice sheet , the fate of koalas , the fate of farmers in India .

Here was a scale , one that homo — particularly a small subset of loaded ones with carbon - intensive lifestyles — have iron out a expectant thumb on . That ’s thrown thing off - balance , but there ’s time to bring up the weight before the scale topples completely .

Argentina’s President Javier Milei (left) and Robert F. Kennedy Jr., holding a chainsaw in a photo posted to Kennedy’s X account on May 27. 2025.

I ’ve write about all of this for years , but holding the daily measurement of the Keeling Curve was the closest I ’ve ever felt to the mood I cover . After take the flask back , Colton offered to permit my wife and I “ sample ” the air . Like he ’s done with uncounted school groups who have tour the lookout before , Colton gave us tiny ampoule to defy up into the wind to accumulate our own little pieces of human story . Scientifically , this was a bit like panning for gold at a holidaymaker stop in an old excavation township , but we gladly accepted . My married woman laugh at the absurdity of it , two grownup holding glass tubes tilted above their heads like kid on a stratum slip . I still held my breath .

Data

You May Also Like

William Duplessie

Starship Test 9

Lilo And Stitch 2025

CMF by Nothing Phone 2 Pro has an Essential Key that’s an AI button

Photo: Jae C. Hong

Doctor Who Omega