Flooding in Europe
More intense rainfall leading to floods. Extreme weather as a results of climate change? https://www.channelnewsasia.com/news/world/germany-deadly-floods-europe-rubble-survivors-15238386
Dengue fever in SE Asia
There seems to be a decline of dengue fever in SE Asia, except Singapore and Vietnam as reported from Jan to June in 2021 as compared to 2020.
What cause the decline in segue fever?
Why do you think there is an increase in the report of dengue fever in Vietnam and Singapore?
How can we manage the spread of Dengue Fever?
Since 2016, NEA has been conducting phased field studies to evaluate the use of male Wolbachia-Aedes mosquitoes to suppress the urban Aedes aegypti mosquito – the primary vector of dengue, chikungunya and Zika viruses in Singapore.
How does COVID-19 contribute to higher number of Dengue cases?
Dengue cases remain high in Singapore as high as 2700 reported in 2021.
The NEA expects an increasing number of dengue cases due to the accelerated breeding cycle and maturation of the Aedes aegypti mosquito vectors - meaning it takes less time for the mosquito to become a biting adult in warmer months - as well as the shorter incubation period of the dengue virus, which is the time needed for the mosquito to pick up the disease and pass it on. This period is around 8 to 12 days when the temperature is 25 to 28 deg C.
Since the Covid-19 phase two (heightened alert) measures kicked in on May 16, the NEA said that more people staying in and working from home could mean more " biting opportunities" for the day-biting Aedes aegypti mosquito, and potentially higher risk of dengue transmission.
Watch the video below on how the spread of dengue fever is managed in Singapore, especially in 2020 when reported case was high.
China's declining birth rate
China introduced the three child policy this year.
Why is there a need to introduce the new policy?
What are the impacts of a declining population in China on Asia?
Tropical cyclones 2021
2 cyclones hit India in May 2021
See the wrath of cyclone Yaas and Tauktae which struck India
Why are tropical cyclones hazardous?
What can be done to mitigate the impacts of tropical cyclones?
What is the difference between cyclones, typhoons and hurricanes?
How are tropical cyclones formed?
Why are places near the equator not affected by tropical cyclones?
How does the Coriolis effect affects tropical cyclones?
Find out the answers here:
How does climate change affects cyclones?
COVID-19 in Singapore
How is the spread of COVID-19 managed in Singapore?
The need for more to be vaccinated, the implementation of quarantine order, stay home notice, trace together and conduct of swab tests.
Are these sufficient to manage the spread?
What other measures are put in to manage the spread of disease?
Stay Safe. Strong together.
Touch each spot on the map and the name of place, date, time visited by cases will be shown.
Look at the bar graph below. Why is the spread greater in the highlighted countries?
Why is the data presented in cases per million per week and not total cases per week?
Another article on the impact of the pandemic in global tourism. Chinese tourists contribute to 1% of Singapore's GDP before the pandemics.
For emerging economies such as Thailand and the Philippines, with a high share of their workforce in the travel and tourism sectors, there will be a rising natural rate of unemployment, with fewer job opportunities to fall back upon compared to workers in developed economies.
Water conflict in Thailand
Industrialisation in eastern Thailand, namely three provinces - Rayong, Chonburi and Chachoengsao has brought water conflict as the industry compete with farmers for the water resources.
Climate change has caused droughts in recent years which took a heavy toll on eastern Thailand’s water resources, adversely affecting local farmers. Flooding is a regular threat too to the farmers as saltwater flows into rivers and along the coastline is worsening.
Why does industry need water?
Why is water important for the farmers?
It is important that the water resources is shared among various stakeholders including new and existing industry, large and small agriculture, and cities and villages.
How can water conflict be resolved?
Eradicating Malaria
World Health Organization (WHO) launched an initiative to help eradicate Malaria in 25 more countries by 2025.
Where are the countries most affected by Malaria found in?
Why are children more vulnerable to Malaria?
What has been done to managed Malaria?
How has WHO helped countries eradicate Malaria?
Causes of Malaria
What must be done to eradicate Malaria?
World Death Toll from COVID-19
The map shows the number of deaths from COVID-19 as at 16 April 2021.
Where are the countries which have near or more than half a million deaths from the pandemic?
You can also observe than countries with near or more than 100,000 deaths are concentrated in Europe and South America.
India seemed to be the only one in Asia with very high death rate from COVID-19. Why do you think the high death toll is higher in India?
What are the factors which affected the spread of the disease? Are the factors similar to those in the textbook for infectious disease such as Malaria?
How effective are the measures carried out to contain the spread?
Source: https://www.channelnewsasia.com/news/world/covid-19-death-toll-3-million-india-cases-surge-14640336
Water Conflicts Mekong River
Watch the following videos and reflect on the questions below.
Where does the Mekong river flow through?
Why does the water level in the river fluctuate?
Who are the ones affected?
How do the people adapt to the fluctuations in the water level?
What are the impacts of more dams built along the river in China and Laos?
Earthquakes and tsunamis 120 years
A good animation showing the earthquakes and tsunamis from 1901 to 2020.
The earthquake hypocenters (Focus) first appear as flashes then remain as colored circles before shrinking with time so as not to obscure subsequent earthquakes. The size of each circle represents the earthquake's magnitude while the color represents its depth within the earth. This animation also highlights significant tsunamis generated by some of these earthquakes.
8.8 – Ecuador-Columbia – 31 January 1906
8.5 – Atacama, Chile 11 November 1922
8.4 – Kamchatka, Russia – 3 February 1923
8.4 – Sanriku, Japan - 2 March 1933
8.6 – Unimak Island, Aleutian Islands 1 April 1946*
9.0 – Kamchatka, Russia 4 November 1952
8.6 – Andreanof Islands, Aleutian Islands 9 March 1957
9.5 – Valdivia, Chile – 22 May 1960*
9.2 - Prince William Sound, Alaska – 28 March 1964*
8.7 – Rat Islands, Aleutian Islands – 4 February 1965
7.7 – Kalapana, Hawaii 29 November 1975*
8.4 – Southern Peru 23 June 2001
9.1 – Sumatra, Indonesia – 26 December 2004*
8.1 – Samoan Islands – 29 September 2009*
8.8 – Maule, Chile – 27 February 2010*
9.0 – Tohoku, Japan – 11 March 2011*
7.9 – Haida Gwaii, Canada 28 October 2012
Majority of all earthquakes occur at plate boundaries and tsunami-causing earthquakes mostly occur at convergent plate boundaries where the subduction zones are.
Note most of the earthquake are shallow. Why does earthquake with shallow focus have higher intensity?
Where are the areas prone to earthquakes?
How are subduction zones formed?
What caused earthquakes to form at plate boundaries?
Why are earthquake and tsunamis hazardous?
How can the damage from earthquakes and tsunamis be mitigated?
*tsunamis
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