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Climate Change

Earth / Environment / Global warming​

Environmental Sciences​

Carbon Cycle, Nitrogen Cycle, Phosphorus and Sulphur Cycle - PMF IAS

AQI / Air Quality / Air Pollution​

Keeling Curve​

The Keeling Curve is a graph of the accumulation of carbon dioxide in the Earth's atmosphere based on continuous measurements taken at the Mauna Loa Observatory on the island of Hawaii from 1958 to the present day. The curve is named for the scientist Charles David Keeling, who started the monitoring program and supervised it until his death in 2005.

Keeling's measurements showed the first significant evidence of rapidly increasing carbon dioxide(CO2) levels in the atmosphere. According to Dr Naomi Oreskes, Professor of History of Science at Harvard University, the Keeling curve is one of the most important scientific works of the 20th century. Many scientists credit the Keeling curve with first bringing the world's attention to the current increase of CO in the atmosphere.

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Animal Cruelty / Veganism / Non-Veg / Vegetarian / Vegan​

Water​

What is the Expiry Date of Water? 🤔​

Often, we decide the 'expiry date' of water based on our own convenience and mindset, which has absolutely no scientific basis. Consider this paradox:

  • 🚰 In Cities: Where tap water comes daily, yesterday's water is considered 'stale' and thrown away. (Expiry date: 1 day)
  • ⏳ Where water comes once in 2 to 8 days: The exact same water is considered perfectly fresh and drinkable for those 2 to 8 days.
  • 🍾 At weddings and events: The moment a fresh bottle of packaged water is placed in our hands, the older, half-filled bottle is instantly dismissed as 'useless' and discarded.

The Reality on the Other Side​

  • 🌵 In Deserts: While traveling, every single drop of water remains life-giving and fresh until the next water source is found.
  • 🌧️ In Nature: Water in dams and ponds remains perfectly usable until the next monsoon (and even up to 2-3 years during droughts).
  • 🕳️ In Borewells: The water we pump from 50 to 500 feet below the ground has been sitting there for hundreds or thousands of years, yet it remains safe, pure, and healthy.

The Conclusion (Food for Thought)​

In reality, water has no expiry date. Its expiration is determined only by our mindset and its availability. When water is easily accessible, we call it stale; when there is a scarcity, the same water becomes priceless.

Therefore, use water wisely, responsibly, and with restraint. Otherwise, long before the water actually runs out, our careless mindset will leave us thirsty.