On Everest's sacred slopes, climate change is thinning snow and ice, increasingly exposing the bodies of hundreds of mountaineers who died chasing their dream to summit the world's highest mountain.
Environment
Jun 27, 2024
0
103
About 183 million years ago, volcanic activity in modern South Africa unleashed an estimated 20,500 gigatons of carbon dioxide (CO2) into the ocean–atmosphere system over a period of 300 to 500 thousand years. Known as ...
Earth Sciences
Jun 25, 2024
1
158
Caltech researchers have discovered a new class of enzymes that enable a myriad of bacteria to "breathe" nitrate when in low-oxygen conditions. While this is an evolutionary advantage for bacterial survival, the process produces ...
Earth Sciences
Jun 21, 2024
0
200
Five hundred million years ago, the so-called Cambrian "SPICE" event made oxygen levels in the oceans drop dramatically.
Earth Sciences
Jun 21, 2024
1
14
Titanium is the ninth most abundant element in the Earth's crust, yet products based on pure titanium are uncommon because it's expensive to remove the oxygen from titanium ore. Reducing costs would encourage manufacturers ...
Analytical Chemistry
Jun 17, 2024
0
28
Phototherapy is a safe and effective method for tumor treatment, including photothermal therapy (PTT) and photodynamic therapy (PDT). PTT refers to the use of laser to activate photothermal conversion agents and use high ...
Bio & Medicine
Jun 14, 2024
0
24
For the first time in history, scientists have measured radium's bonding interactions with oxygen atoms in an organic molecule. Scientists have not measured this bonding before because radium-226 is available only in small ...
Analytical Chemistry
Jun 13, 2024
0
0
About 2.5 billion years ago, free oxygen, or O2, first started to accumulate to meaningful levels in Earth's atmosphere, setting the stage for the rise of complex life on our evolving planet.
Earth Sciences
Jun 12, 2024
1
189
Ice shelves surrounding Antarctica have been melting with increasing speed in recent years. Much of this melting happens from below, as warm water eats away at their bases. This warm water is moved around Antarctica by currents ...
Earth Sciences
Jun 5, 2024
1
197
A research team recently developed a sustainable and chemical-free superoxide (O2•−) generation strategy by integrating rechargeable carbonaceous supercapacitors with redox-moiety based O2 activation. These findings have ...
Analytical Chemistry
Jun 4, 2024
0
6
