How does a protein function? How does a virus infect? How does a cell know what it’s supposed to do? How do seeds start their journey into vegetation? How does a tardigrade spring back to life after being a dried husk? How did life on Earth begin? The answer is selfsame.
It is extremely common to read textbooks or magazine articles which state that the brain is responsible for consciousness and cognition. This is nothing more than religious rubbish posing as science. Neurobiology is to psychology what astrology is to astronomy.
All vertebrates feel pain. Pain functions to alert an animal to potential damage and to reduce activity after trauma.
Almost all cells – whether prokaryote or eukaryote – have tails. Eukaryotes evolved from a tail-bearing prokaryote. Only seed-producing plants have cells without tails, though their genomes retain the knowledge.
In multicellular organisms, somatic cell replication is essential to replacing worn-out cells with fresh copies. While, to some degree, plants can grow themselves past genetic defects, animals must have good working replacements for proper functioning.
The mind and body are entangled. Changes to the brain can influence mental function. But, more than anything, it is the power of the mind that controls health. That’s true even for birds.
Late spring 2013: from the remaining forests of the northeastern United States, cicadas are emerging to mate as the culmination of their 17-year life cycle. Their ways retain enigmas.
Many mammals, including dogs, rats and cats, sniff each other out when they meet. For rodents at least, sniffing intensity signals social status.
The germ theory of disease originated in 1546, when Italian physician Girolamo Fracastoro (1476 – 1553) hypothesized epidemic diseases were caused by infectious seeds of some sort. Since that time, bacteria and viruses came to be microbial evil incarnate. Only in recent years have bacteria redeemed themselves a bit by discovery that they define digestion, regulate physiology, and that humans are mostly made up of them. Now it is viruses turn.
Marshes form a transition zone between aquatic and terrestrial ecosystems. Marshes are found worldwide.