Curated Video
Ionization Energy Insights Looking at Trends in Elements in Group IV
The ionisation energy decreases progressively as we move down the group. However, in the case of lead (Pb), the ionisation energy is higher than that of tin (Sn) due to inadequate shielding of the inner f-orbitals. This results in a...
Curated Video
What Will Earth Look Like When These 6 Tipping Points Hit?
A “tipping point” is when a system, with just a small amount of additional energy, is pushed from one stable state to another suddenly and dramatically. This can be a chair falling backwards. Or it can be a major earth system collapsing....
Curated Video
Can Green Energy Make The Grid SAFER?
Climate scientists are clear that we need to reach net zero carbon emissions by 2050. And in order to do this, we’re going to need to electrify everything and green the grid. But what will this clean, green future look like? Can we pull...
Curated Video
Is Permafrost the Climate Tipping Point of No Return?
Arctic air is warming, causing scientists to worry that melting arctic ice and snow could also lead to a sudden permafrost thaw and release of carbon dioxide (CO2) and methane (CH4) that forms a climate tipping point or feedback loop....
Curated Video
Earth’s Climate Has Always Changed. Why All the Fuss?
If you take a look at global temperature graphs that span millions or billions of years, you can see that our planet’s temperature has made wild swings. In fact, the Earth used to be completely covered in snow and ice! So, what’s the big...
Curated Video
Why Tree Planting Campaigns Don’t Work
In 2019, a Turkey tree planting campaign set a world record. Three months later, 90% of those saplings were dead. Planting trees to replace old-growth forests is a common solution, but it typically does not solve the problem. With...
Curated Video
The Periodic Table
The year 2019 is celebrated as the International Year of the Periodic Table (#IYPT) in recognition of its discovery 150 years ago in 1869. Listen along as Dr. Boyd gives a detailed explanation of its arrangement and what all the letters...
Curated Video
Los combustibles fósiles: formación
Dependemos de los combustibles fósiles, que aportan cerca del 90 % de la energía mundial, pero su formación lenta y su uso intensivo los convierten en una fuente finita e insostenible.
Curated Video
Roca sedimentaria
Roca que se forma, con el tiempo, a partir de capas de sedimento.
Twig - Ciencias de la tierra
Curated Video
Combustibles fósiles
Los combustibles tardaron millones de años en formarse, en condiciones de alta presión y temperatura, a partir de los restos fosilizados de materia orgánica muerta, como plantas y animales.
Twig - Ciencias de la tierra
Curated Video
Los combustibles fósiles: utilización
Los combustibles fósiles son una fuente limitada de energía. ¿Cuánto durarán? ¿Por qué es tan difícil y costosa la extracción de estos combustibles del interior de la Tierra y de los océanos?
Twig - Ciencias de la Tierra - Los...
Curated Video
El carbono: introducción
El carbono aparece en la naturaleza en cuatro formas diferentes. Descubre en qué difieren y por qué.
Twig - Química - Los átomos y los enlaces - Los enlaces químicos
Claves de aprendizaje
El carbono está presente en todos los...
Brave Wilderness
Inked by a Tattoo Needle
Coyote has endured some of the most painful stings in the animal kingdom, but how does that pain compare to a tattoo needle? In this unique episode, Coyote gets his first-ever tattoo and compares the sharp, stinging sensation of the...
Curated Video
Sp Hybridization in Alkynes: Exploring Triple Bonds
In alkynes, such as acetylene (C₂H₂), carbon atoms undergo sp hybridization. This involves the mixing of one 2s orbital and one 2p orbital, forming two sp hybrid orbitals. These orbitals align in a linear arrangement with a bond angle of...
Curated Video
Sp² Hybridization in Ethene: The Secret of Double Bonds
Hybridization Process: Carbon atoms undergo sp² hybridization, mixing one 2s and two 2p orbitals to form three sp² hybrid orbitals arranged in a trigonal planar geometry (120° bond angles). Bond Formation: Two sp² orbitals form sigma (σ)...
Curated Video
Lewis Structures in Action: CO₂ and NO₂ Examples
In this topic, we explore how to draw and interpret the Lewis structures of carbon dioxide (CO₂) and nitrogen dioxide (NO₂), two important molecules in chemistry. CO₂ features a linear structure with double bonds between carbon and...
Curated Video
VSEPR Theory Postulates: The Rules Behind Molecular Geometry
The Valence Shell Electron Pair Repulsion (VSEPR) theory predicts molecular shapes by focusing on the repulsion between electron pairs surrounding a central atom. The main postulates include: Electron Pair Repulsion: Electron pairs...
Curated Video
Lewis Symbols Decoded: Simplifying Electron Counts
Lewis symbols represent valence electrons around an atom's chemical symbol, helping visualize bonding and the formation of molecules
Astrum
What Will Happen When Betelgeuse Implodes?
Betelgeuse, Betelgeuse, Betelgeuse. Why were you dimming? Scientists may have finally come up with the answer thanks to data from Hubble.
Science ABC
What Happens (Chemically) When Wood Burns?
When wood comes in contact with fire, it undergoes thermal degradation, or pyrolysis. The pyrolysis of wood leads to the release of certain volatile gases and the formation of char, which eventually undergoes flaming and glowing...
Science ABC
Photosynthesis: The Biochemistry Behind How Plants Make Their Food
Plants, unlike most living things, produce their own food through a process called photosynthesis. Photosynthesis means 'making using light'. Plants use the energy from the sunlight to make food. The food matter comes from carbon dioxide...
Curated Video
Surprising Truth Behind Planting Trees and Climate Change
For decades we’ve been planting trees in hopes of reducing carbon pollution. But when it comes to carbon sequestration, have we actually been getting it all backward? We travel to the Pacific Northwest forests of Oregon to see what we...
Curated Video
Non-flammable
A substance that is not readily ignited or rapidly burned is said to be non-flammable. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...