Lifeboat Foundation

An exploration of the structure of deoxyribonucleic acid, or DNA. If you want to learn more, join our free MITx #700x Introduction to Biology course (http://bit.ly/700xBio) or our #703x Genetics (https://bit.ly/GeneticsPart1) Also try #705x Biochemistry. (http://bit.ly/705xBiochem) or our advanced #728x Molecular Biology course (http://bit.ly/MITx7281x). Learn more about our work: http://web.mit.edu/mitxbio/courses.html.

This video was created for MITx 7.28.1x Molecular Biology: DNA Replication & Repair, offered on edX.

Continue reading “The Structure of DNA” »

In this video students of the Maastricht Science Program NanoBiology Course 2020, show their explanation of the SARS-CoV-2 viral budding. Using CellPAINT, UCFS Chimera and their creativity they explain the nanobiology of how the SARS-CoV-2 virion can bud and leave the cell.

Viruses are not living things. They are just complicated assemblies of molecules, in particular macromolecules such as proteins, oligonucleotides, combined with lipids and carbohydrates. A virus cannot function or reproduce by itself. It needs a host cell.

Continue reading “Viral Budding of the SARS-CoV-2 virus — NanoBiology Course 2020 — Tuesday Group” »

New research reveals clues about the physical and chemical characteristics of Earth when life is thought to have emerged.

About four billion years ago, the first signs of life emerged on Earth in the form of microbes. Although scientists are still determining exactly when and how these microbes appeared, it’s clear that the emergence of life is intricately intertwined with the chemical and physical characteristics of early Earth.

“It is reasonable to suspect that life could have started differently—or not at all—if the early chemical characteristics of our planet were different,” says Dustin Trail, an associate professor of earth and environmental sciences at the University of Rochester.

Some people who live near the derailment site in East Palestine, Ohio, fear they and their animals may be exposed to chemicals through the air, water and soil.

Amount of toxin present in wheat, which is carcinogenic when heated, can be reduced and grown, new field study confirms Toast could soon be healthier after scientists grew a field of wheat genetically-edited to remove a cancer-causing chemical. Bread, when baked, produces a dangerous toxin called acrylamide, which is believed to be carcinogenic and when toasted is even more lethal.

https://youtube.com/watch?v=fK3AQgt47z4

In 2021, Carbon Robotics unveiled the third-generation of its Autonomous Weeder, a smart farming robot that identifies weeds and then destroys them with high-power lasers. The company now has taken the technology from that robot and built a pull-behind LaserWeeder — and it kills twice as many weeds.

The weedkiller challenge: Weeds compete with plants for space, sunlight, and soil nutrients. They can also make it easier for insect pests to harm crops, so weed control is a top concern for farmers.

Continue reading “Farming robot kills 200,000 weeds per hour with lasers” »

Researchers at the University of Göttingen have created a new approach to generate colored X-ray images. Previously, the only way to determine the chemical composition and arrangement of components in a sample using X-ray fluorescence analysis was to focus X-rays on the entire sample and scan it, which was both time-consuming and costly. The new method allows for the creation of an image of a large area with just one exposure, eliminating the need for focusing and scanning. The findings were published in the journal Optica.

In contrast to visible light, there are no comparably powerful lenses for “invisible” radiation, such as X-ray, neutron, or gamma radiation. However, these types of radiation are essential, for example, in nuclear medicine and radiology, as well as in industrial testing and material analysis.

Uses for X-ray fluorescence include analyzing the composition of chemicals in paintings and cultural artifacts to determine authenticity, origin, or production technique, or the analysis of soil samples or plants in environmental protection. The quality and purity of semiconductor components and computer chips can also be checked using X-ray fluorescence analysis.

Leading theories suggest that the first energy used by life was either from the sun or from geothermal heat and chemistry at the bottom of the ocean.

The first signs of life emerged on Earth in the form of microbes about four billion years ago. While scientists are still determining exactly when and how these microbes appeared, it’s clear that the emergence of life is intricately intertwined with the chemical and physical characteristics of early Earth.

“It is reasonable to suspect that life could have started differently—or not at all—if the early chemical characteristics of our planet were different,” says Dustin Trail, an associate professor of earth and environmental sciences at the University of Rochester.

But what was Earth like billions of years ago, and what characteristics may have helped life to form? In a paper published in Science, Trail and Thomas McCollom, a research associate at the University of Colorado Boulder, reveal key information in the quest to find out. The research has important implications not only for discovering the origins of life but also in the search for life on other planets.