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Fix link rendering typo in lecture 1 notes #4

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4 changes: 2 additions & 2 deletions Lectures/Lecture 1 - Introduction/Lecture 1 Notes.md
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Expand Up @@ -9,7 +9,7 @@ Since the Industrial Revolution in the 1800's, human society has been expanding
[Line go up.](https://futureearth.org/2015/01/16/the-great-acceleration/)

## A primer on climate change
The most important and far-reaching impact of humanity on the planet is climate change. This is not a course about climate change, but we should get a baseline understanding of how it works. In short, our planet is in [energy equilibrium](https://climate.mit.edu/explainers/radiative-forcing) with the surrounding cosmos: the incoming energy from the Sun is balanced out by the energy emitted by the planet as infrared radiation. This emitted energy is [correlated](https://en.wikipedia.org/wiki/Black-body_radiation#Equations](https://en.wikipedia.org/wiki/Black-body_radiation#Equations) with the temperature of the planet.
The most important and far-reaching impact of humanity on the planet is climate change. This is not a course about climate change, but we should get a baseline understanding of how it works. In short, our planet is in [energy equilibrium](https://climate.mit.edu/explainers/radiative-forcing) with the surrounding cosmos: the incoming energy from the Sun is balanced out by the energy emitted by the planet as infrared radiation. This emitted energy is [correlated](https://en.wikipedia.org/wiki/Black-body_radiation#Equations) with the temperature of the planet.

Our world economy currently relies on fossil fuels. When these fuels are combusted, they emit gases such as carbon dioxide into the atmosphere. These gases absorb some of the energy emitted by the planet as infrared radiation. This means that, to maintain the energy balance, the planet gets hotter: the greenhouse effect, hence why these gases are called [greenhouse gases](https://climate.mit.edu/explainers/greenhouse-gases). If the planet is hotter, then the atmosphere is also warmer, and can store more water, making weather patterns more unpredictable and extreme - this is what we commonly call climate change.

Expand Down Expand Up @@ -102,4 +102,4 @@ Want to know more about the topics in this lecture? Here are some sources that d
- [Energy and Human Ambitions on a Finite Planet](https://escholarship.org/uc/item/9js5291m): a very readable textbook about the physical limits to human society imposed by our planet.
- [The Limits to Growth](https://www.clubofrome.org/publication/the-limits-to-growth/): the seminal work from the Club of Rome that started the debate about the prospect of infinite economic growth through the use of system dynamics modeling.
- [Ecological Economics](https://archive.org/details/ecologicaleconom0000daly_l4v5): a framework developed by Herman Daly to include the interactions between the economic and natural systems in economic modeling.
- [Resources of the Seven Billion](https://youtu.be/Y9oDn1_zt6A): a lecture from population ecology researcher William Rees on the ecological footprint and overshoot of humanity.
- [Resources of the Seven Billion](https://youtu.be/Y9oDn1_zt6A): a lecture from population ecology researcher William Rees on the ecological footprint and overshoot of humanity.