There has been a sudden increase of incidents of abrupt beaching of large seaweed mounds that choke coastlines and form decaying piles on the shore in hitherto unreported areas worldwide. These ‘seaweed tides’ can disrupt tourism based economies, stunt aquaculture operations or halt traditional artisanal fisheries. Coastal eutrophication is the most likely explanation for the increase in seaweed biomass but the local processes responsible for individual beaching events are complex and require dedicated analysis to develop effective mitigation strategies. Harvesting the macroalgae, a prized raw material, before they beach could be an effective solution.
The global community adopted the Vienna Convention and the Montreal Protocol to protect the ozone layer and to phase out ozone depleting substances. India became party to both and complied with all control measures as per the 1993 Country Programme. India, as a follow up to the Kigali Amendment to the Montreal Protocol, launched the India Cooling Plan to enhance energy efficiency while addressing cooling demand.
The Montreal Protocol and its amendments have played an important role in restricting the depletion of stratospheric ozone caused by anthropogenic ozone-depleting substances. The India Meteorological Department is monitoring the total column ozone, which shows that photochemistry is the dominant factor controlling its concentration. Research has also revealed that stratospheric ozone concentrations over different regions along the same latitude have varying recovery rates.
Trapped by the inversion of temperature, a characteristic feature of winter, along with burning of stubble and fire crackers, pollution exacerbates in Delhi, calling for urgent and effective countermeasures for abatement.
The growing menace of pollution, especially plastic is threatening many fragile ecosystems—be it the natural flow of rivers, surface drainage or marine life. The article explores the problem and the consequential damage arising out of dumping about 5 to 13 million tonnes of plastic into the ocean each year.
A total of 19 states in India have introduced a ban on plastic bags. Maharashtra and Uttar Pradesh too have recently joined the fight against plastic waste. However, plastic usage continues unhindered in the absence of rigorous implementation considerably undermining the effectiveness of the ban.
Three humongous landfills of Delhi—Ghazipur, Okhla and Bhalaswa, are way past their capacity. Yet they continue to grow. As their collapse appears imminent with each passing day, threatening to sink the city under its own weight, authorities are suggesting measures for alternative spaces that are clearly not viable.
For 3 days from June 13 to 15, 2018 air quality at ‘severe’ levels in the city of Delhi. The spike in pollution levels led to the Lieutenant Governor of Delhi banning all construction activities in Delhi until June 17, 2018. The air quality started improving on June 15, 2018 when an AQI (Air Quality Index) of 447 for the day was recorded (HT, 2018). During the 3 days, Delhi was covered with a thick blanket of smog and haze whose chief cause was attributed to dust storms occurring in western India...
When we talk about pollution, thermal pollution rarely comes to our minds. However, with the innumerable thermal power plants and industries mushrooming everywhere, thermal pollution is a real and persistent problem of current times. Thermal pollution in the broadest sense can be defined as the abrupt change in ambient temperature of a natural water body by any human induced processes. The increase or decrease of water temperature degrades the quality of water and makes it unfit for consumption...
What is plastic waste and why is it bothersome? Plastics are synthetic organic polymers made from petrochemicals with additives such as colorants, stabilisers, fillers etc. Plastic wastes are the discarded materials whose shelf life is over or are left with no economic use. The sources of plastic wastes are wide, ranging from domestic to industrial sectors, such as plastic bottles or cups, straws, discarded fish nets, parts of electronics, construction materials etc. One third of plastic produce...