19+ hour, 22+ min ago   (347+ words) Limiting Factor is a two-person Triton 36000/2 submersible rated to 11,000 meters. Its pressure hull is a titanium-alloy sphere with walls 90 millimeters thick. Triton states that the sphere was machined to 99.933 percent of a true sphere. The crew sits inside that compact…...

3+ day, 14+ hour ago   (674+ words) Grand Isle sits near the mouth of the Mississippi River on a barrier island built largely from relatively young delta sediment. VIMS puts its post-1969 relative sea-level trend at roughly 8.2 millimeters per year, the highest rate among the locations in…...

3+ day, 19+ hour ago   (670+ words) WorldAtlas Since the year 2000, the Colorado River has been quietly living beyond its means, handing out more water than nature returns to it. So how much has it actually lost? The number is genuinely staggering, but the full story is…...

3+ day, 20+ hour ago   (1392+ words) Here is what actually happens, in order, when the snow fails twice. Not a metaphor. Colorado's snowpack stores roughly 15 million acre-feet of water at its spring peak, which is a volume comparable to a major reservoir, and it releases that…...

4+ day, 9+ hour ago   (1217+ words) Here is which dams have gone longest without one, what happened when the streak ended, and why the never-used category is really a list of things nobody has checked. Reclamation's own history is unambiguous about this. The Hoover spillways have…...

4+ day, 19+ hour ago   (1199+ words) The chronology below follows the Trust for Public Land's ranking of the oldest city parks in the country, and every entry is one you can still walk into. Fifty acres today, bounded by Tremont, Park, Beacon, Charles and Boylston in…...

5+ day, 9+ hour ago   (820+ words) WorldAtlas Stand in almost any patch of woods east of the Mississippi River, and there is a good chance the oldest tree around is not much older than a great-grandparent. That is not because American forests are dying, but because…...

1+ week, 1+ day ago   (269+ words) WorldAtlas California's largest lake was created by accident, and more than a century later, keeping it from turning into an even greater environmental disaster is proving enormously difficult. The Salton Sea almost feels as if it were horribly fated. It…...

1+ week, 4+ day ago   (1159+ words) WorldAtlas The white "bathtub ring" around Lake Mead has become one of the most alarming images in America, a ghostly line of bleached rock showing exactly how much water the country's largest reservoir has surrendered to drought. It is a…...

1+ week, 4+ day ago   (192+ words) Given its size, minimal population, and Canadian passivity, Pelee Island was the most chilled out and nature-centric of the major islands, Middle Bass notwithstanding. So if that sounds like your preferred formula, give Pelee priority. Upon arrival, I was met…...