Exercise Releases Brain-Healthy Proteins

We all know that exercise is important for a strong and healthy body. Less appreciated is that exercise seems also to be important for a strong and healthy mind, boosting memory and learning, while possibly delaying age-related cognitive decline [1]. How is this so? Researchers have assembled a growing body of evidence that suggests skeletal muscle cells secrete proteins and other factors into the blood during exercise that have a regenerative effect on the brain. Now, an NIH-supported study...

 Altruism is a Basic Human Instinct

The cost for my survival must have been hundreds of millions of dollars. All to save one dorky botanist. Why bother? Well, okay. I know the answer to that. Part of it might be what I represent: progress, science, and the interplanetary future we’ve dreamed of for centuries. But really, they did it because every human being has a basic instinct to help each other out. It might not seem that way sometimes, but it’s true. If a hiker gets lost in the mountains, people will coordinate a sear...

 Physiological Effects from Exposure to a Vaccum

Vacuum doesn’t have a temperature of its own, so space is not really that cold. It’s a great insulator too, meaning that your core body heat doesn’t get sucked away. Without an atmosphere to transfer heat away, the risk of exposure is somewhat mitigated. The saliva on your tongue may boil off, as it’s not pressurized like your blood is, and you may get some frost on your skin. Sunburn from direct contact with the sun’s ultraviolet rays is a more immediate danger than perishing from ...

 Beware of Software Engineers Who Do Not Maintain Their Ow...

If an engineer is not tasked with the long term maintenance of the systems they build, view them with suspicion. 80% of the blood, sweat, and tears of software occurs after its been released—that’s when you become a world weary, but wiser “professional.”

 Religion VS Science in Cruelty

As to Science, she has never sought to ally herself to civil power. She has never attempted to throw odium or inflict social ruin on any human being. She has never subjected anyone to mental torment, physical torture, least of all to death, for the purpose of upholding or promoting her ideas. She presents herself unstained by cruelties and crimes. But in the Vatican—we have only to recall the Inquisition—the hands that are now raised in appeals to the Most Merciful are crimsoned. They hav...

 Knowledge for the Sake of Understanding is in Our Blood

Science has a simple faith, which transcends utility. Nearly all men of science, all men of learning for that matter, and men of simple ways too, have it in some form and in some degree. It is the faith that it is the privilege of man to learn to understand, and that this is his mission. If we abandon that mission under stress we shall abandon it forever, for stress will not cease. Knowledge for the sake of understanding, not merely to prevail, that is the essence of our being. None can defin...

 We Are Made of Star Stuff

The fate of individual human beings may not now be connected in a deep way with the rest of the universe, but the matter out of which each of us is made is intimately tied to processes that occurred immense intervals of time and enormous distances in space away from us. Our Sun is a second- or third-generation star. All of the rocky and metallic material we stand on, the iron in our blood, the calcium in our teeth, the carbon in our genes were produced billions of years ago in the interior of...

 The Art of Preserving Health

The blood, the fountain whence the spirits flow, The generous stream that waters every part, And motion, vigour, and warm life conveys To every Particle that moves or lives; This vital fluid, thro' unnumber'd tubes Pour'd by the heart, and to the heart again Refunded; scourg'd forever round and round; Enrag'd with heat and toil, at last forgets Its balmy nature; virulent and thin It grows; and now, but that a thousand gates Are open to its flight, it would destroy The parts it cherish' d and ...

 Animals Evolved onto the Land and Took the Ocean With them

If you go back far enough, everything lived in the sea - watery, salty alma mater of all life. At various points in evolutionary history, enterprising individuals from many different animal groups moved out on to the land, sometimes eventually to the most parched deserts, taking their own private sea water with them in blood and cellular fluids. In addition to the reptiles, birds, mammals and insects we see all around us, other groups that have succeeded in making the great trek out of life's...

 By the Toll of a Billion Deaths Have Humans Earned our Ri...

These germs of disease have taken toll of humanity since the beginning of things–taken toll of our prehuman ancestors since life began here. But by virtue of this natural selection of our kind we have developed resisting power; to no germs do we succumb without a struggle, and to many–those that cause putrefaction in dead matter, for instance–our living frames are altogether immune… By the toll of a billion deaths man has bought his birthright of the earth, and it is his against all c...