TED: A young scientist's quest for clean water | Deepika Kurup

The video discusses the speaker's experiences in India, highlighting the global water crisis and the lack of access to clean water. It explains the scarcity of freshwater and its impact on children, with statistics from WHO and UNICEF. The speaker shares her journey of developing a new water purification method using photocatalysis, overcoming challenges, and founding a social enterprise to address the issue. The video concludes with a call to collective action to solve the water crisis.

What realization did the speaker have during their visit to India?

• The need for more travel experiences

• The benefits of drinking bottled water

• The importance of cultural diversity

• The global issue of clean water access

What percentage of Earth's water is freshwater available for human use?

• 50%

• 2.5%

• 75%

• Less than 1%

What is the main disadvantage of the SODIS method?

• It uses harmful chemicals

• It requires expensive equipment

• It is too fast and inefficient

• It is slow, especially on cloudy days

What does the term 'photocatalysis' refer to?

• A technique to block UV radiation

• A process to enhance solar disinfection

• A way to purify air

• A method to slow down chemical reactions

What problem arises from using photocatalytic coatings inside bottles?

• They enhance UV radiation

• They are too expensive

• They wash off and reduce efficiency

• They make water taste bad

What materials are combined in the speaker's photocatalytic composite?

• Plastic and metal

• Titanium dioxide and cement

• Cement and sand

• Titanium dioxide and plastic

What is the purpose of the Catalyst for World Water enterprise?

• To promote travel to India

• To develop new bottled water brands

• To find solutions to the global water crisis

• To create educational programs about water