23^rd August 2025

1. Workplace Heat Stress: Recently, a joint report by the World Health Organization (WHO) and the World Meteorological Organization (WMO) warned that rising global temperatures are putting millions of workers at severe risk.

• Key Findings: Global productivity hit: Each 1°C rise above 20°C in wet-bulb temperature reduces worker productivity by 2–3% and increases health risks.
• High-risk workers: Outdoor occupations—construction, agriculture, fisheries—are most vulnerable to heat-related illness and death.
• Health impacts: Heat stress can cause exhaustion, dehydration, kidney impairment, neurological issues, and long-term chronic conditions.
• Rising global exposure: Over 2.4 billion workers are affected worldwide, with nearly 19,000 deaths annually linked to workplace heat stress.
• Urgent action needed: Implementation of occupational heat action plans and protective measures is critical to safeguard workers’ health and economic productivity.

2. “Rethinking Homestays: Navigating Policy Pathways” Report: Recently, NITI Aayog, in collaboration with the Internet and Mobile Association of India (IAMAI), launched the report titled “Rethinking Homestays: Navigating Policy Pathways.”

• Key Highlights: The report provides a strategic framework to unlock the potential of homestays and BnBs (Bed and Breakfast), positioning them as key drivers of cultural tourism, local entrepreneurship, and inclusive economic growth.

o   Public–Private Collaboration: Industry leaders from IAMAI, ISPP, MakeMyTrip, Airbnb, Chase India, and The Convergence Foundation participated in the launch.

• Collaboration between government and private players is crucial for building a vibrant homestay ecosystem.
  
• Key Recommendations: Flexible Policy Approaches: Tailor regulations to local conditions and tourism potential.

• Capacity Building: Train hosts on hospitality, hygiene, and digital tools.

• Digital Integration: Use online platforms to enhance visibility, bookings, and consumer trust.

• State-Level Best Practices: Learn from successful models in Goa, Kerala, and Uttarakhand for scalable governance and operations.
• Heritage-Conscious Growth: Promote homestays that preserve local architecture, crafts, and cultural practices.

3. Famine in Gaza: Recently, United Nations Secretary-General Antonio Guterres described the confirmed famine in Gaza City and its surrounding areas as a “failure of humanity,” calling it a man-made disaster.

• Key Highlights: IPC Classification: Parts of Gaza have been raised to Phase 5 by the Integrated Food Security Phase Classification (IPC), indicating starvation, destitution, and death, affecting over half a million people.
• Urgent Humanitarian Response Needed: The IPC has called for an immediate, at-scale response to prevent further famine-related deaths. Without urgent action, famine is expected to spread from Gaza City to Deir al-Balah and Khan Younis between mid-August and the end of September.
• Conflicting Claims on Aid Access: Israel denies the existence of starvation in Gaza and rejects claims of restricting humanitarian aid, calling the UN report an “outright lie.”
• Humanitarian Urgency: The UN highlights that restrictions on aid and limited food access are worsening the crisis, making Gaza a humanitarian emergency requiring immediate global attention.

4. Huntington’s disease (HD): Recently, patients and caregivers have urged the union and state governments to include Huntington’s disease (HD) as a rare disease under the National Policy for Rare Diseases; however, this classification has not yet been implemented.

• About Huntington’s disease: A genetic disorder that gradually damages brain cells. If one parent has HD, there is a 50% chance of inheriting the condition. It primarily affects brain regions responsible for voluntary movement and memory.
• Causes: HD is caused by a mutation in the HTT gene, which produces the protein huntingtin. In HD, huntingtin proteins are malformed, leading to the destruction of neurons in the basal ganglia (movement regulation) and cortex (thinking, decision-making, and memory).
• Prevalence: HD affects 3–7 per 100,000 people, most commonly individuals of European descent.
• Symptoms: Involuntary, dance-like movements (chorea)
• Abnormal body postures
• Behavioral, emotional, and cognitive issues
• Tremors and unusual eye movements (often early in the disease)
• Symptoms worsen over time, and patients eventually require continuous care. Life expectancy after symptom onset is typically 15–20 years.
• Treatment: There is no cure for HD. Medications are available to manage specific symptoms, but the disease cannot be stopped or reversed.

5. Impacts of Crop Residue Burning: Recently, a study published in Science of the Total Environment revealed that crop residue burning not only contributes to air pollution but also disrupts biodiversity, degrades soil health, and increases agricultural pest outbreaks, leading to greater reliance on chemical fertilizers.

• Key Highlights: Crop residue burning reduces populations of natural predators such as spiders, ladybird beetles, frogs, earwigs, predatory mites, and beetles, leading to lower species diversity.
  • Decomposer populations like sow bugs, earthworms, millipedes, and red imported fire ants also decline, harming soil biodiversity. Decline of natural predators and decomposers increases pest populations (e.g., nematodes, mice), disrupting natural pest control.
  • Burning releases carbon monoxide, nitrous oxide, sulphur oxides, heavy metals, toxic compounds, and particulate matter (PM2.5 & PM10).
  • Air pollution leads to respiratory issues, reduced reproductive success, eggshell thinning, heavy metal contamination, and lower insect availability.
  • Birds dependent on insects are indirectly affected due to loss of prey and habitat changes.
  • Findings are based on a qualitative review of 250 peer-reviewed studies covering Asia, the Americas, and Africa, including countries like India, China, Brazil, Mexico, and Pakistan.

6. Stellar Atmosphere Modeling: Recently, a team of astrophysicists developed a new computational method to model stellar atmospheres with unprecedented realism. This breakthrough allows for more accurate simulations of stellar spectra, aiding the study of stars, circumstellar disks, and interstellar clouds.

·      Key Findings: Scientists can now model atoms with three energy levels, capturing complex processes like Raman scattering that older models missed.

• Atoms Move Differently: Excited hydrogen atoms near the star’s surface don’t move as previously assumed, affecting how we interpret stellar data.
• More Realistic Star Simulations: The new method can simulate chaotic interactions in stars, giving more accurate predictions of their spectra.
• Better Understanding of Star and Planet Formation: It helps study where stars and planets form, like in circumstellar disks and molecular clouds.
• Helps Find Exoplanets: Accurate star data makes it easier to detect Earth-like planets around other stars.
• Ready for More Complex Atoms: The method can be expanded to atoms with more energy levels, improving stellar atmosphere models further.

7. Lunar Module Launch Vehicle: Recently, the Indian Space Research Organisation (ISRO) began developing its heaviest rocket to date, named the Lunar Module Launch Vehicle (LMLV).

• About Lunar Module Launch Vehicle: Tall as a 40-storey building, surpassing the current LVM-3.
• Expected to be ready by 2035 and will be used for lunar missions, including India’s first human Moon mission by 2040.
• Payload Capacity: Can carry 80 tonnes to low Earth orbit (LEO) compared to 30 tonnes planned for the NGLV.
• Can carry 27 tonnes to the Moon.
• Technical Specifications of LMLV: Three-stage rocket: first two stages use liquid propellant, third stage uses cryogenic propellant.
• First stage core + two strap-on boosters: 27 engines in total (3 sets of 9).
• Strap-on boosters alone are taller than the current LVM-3.
• About LVM-3: Carried Chandrayaan-3 and is human-rated for Gaganyaan, India’s human spaceflight program.
• Space Station Plans: India aims to set up a five-module Bharatiya Antariksh Station (BAS) by 2035.

8. Exercise Samanvay Shakti: Recently, Exercise Samanvay Shakti 2025 was formally inaugurated at Laipuli, Tinsukia district, Assam, marking a significant event in the region’s defense preparedness initiatives.

• About the Exercise: Initiated by the Indian Army in collaboration with Assam and Manipur state officials.
• It is a military-civil integration exercise aimed at enhancing coordination, cooperation, and mutual understanding among security forces, government departments, and civil institutions.
• Focuses on addressing complex regional challenges through a unified approach.
• Participation: Inaugural session included personnel from the Indian Army, Indian Air Force, District Administration, Police, Intelligence Agencies, NDRF, SDRF, Medical Officials, BRO & GREF, Railways, and educational institutions.
• Representatives from OIL India, IOCL, Coal India, and local media were also present.
• Objectives: Enhance readiness through practical rehearsals and streamlined communication and standard operating procedures (SOPs).
• Support security preparedness, regional development, nation-building, and reinforce national integration.

9. Blue Carbon: Recently, seaweed farming has emerged as a potential tool for Blue Carbon, although empirical data on carbon sequestration from these farms remain limited.

• About Blue Carbon: Refers to organic carbon captured and stored by oceans in vegetated coastal ecosystems like mangroves, saltmarshes, and seagrass meadows.
• The term “Blue” highlights the water-based nature of this carbon storage.
• Significance: These ecosystems store massive amounts of carbon, playing a critical role in global climate change mitigation.
• Although they cover only 2% of the ocean surface, they account for 50% of the ocean’s carbon absorption.
• Carbon Storage Mechanisms: Most blue carbon is carbon dioxide dissolved in the ocean.
• Smaller amounts are stored in underwater sediments, coastal vegetation, soils, carbon-containing molecules (DNA, proteins), and marine life from phytoplankton to whales.
• About Seaweed: A group of marine plants and algae growing in oceans, rivers, and lakes, ranging from microscopic forms to large underwater forests, anchored by holdfasts.
• Uses: Seaweed is edible, rich in antioxidants, helps manage blood sugar and fat metabolism, and is used in fertilizers, cosmetics, and commercial products like toothpaste and jellies.