Greater education can help Hongkongers recognise the ­importance of recycling. There can be more workshops and public service messages on TV, so that people have a better understanding of what recycling means and what they can do to make a real difference.

If we all cooperate, we can ­reduce the amount of waste dumped in landfills.

Suki Lee, Hang Hau

Solar panels on buses can help cut pollution

This will also help passengers, as the system will supply power to ­on-board USB ports for charging smartphones while the engine is running.

Any efforts that reduce the emissions from our buses is to be ­welcomed, because Hongkongers have become increasingly concerned about the high ­roadside pollution levels.

The decision by KMB to introduce this system can only improve its corporate image, as citizens see that a public transport operator is serious about trying to reduce the levels of air pollution it generates.

This is an example of a company ­recognising its corporate social responsibility.

I hope that other public transport operators will adopt this scheme and do their bit to help clean up the environment in Hong Kong.

Given the huge number of people using public transport daily, having a system like this on buses, minibuses and taxis can make a real difference. The government could ­offer subsidies to encourage more firms to fit solar panels on vehicles.

Heidi Keung, Kowloon Tong

Phone apps now the smart way to shop

I agree with those who say that using online payment ­systems is a very convenient way to shop or pay other bills.

Many consumers on the mainland now choose to use an online app to pay for purchases. They no longer go out with a ­wallet full of notes, ­because they do not need to.

They are free of the burden of coins and having to count them out laboriously on the shop counter so that they have exactly the right amount, while there is a long queue of people behind ­impatiently waiting to be served.

Shopping would be so much easier in Hong Kong if we followed the example of the mainland, and all shops would allow you to buy with an app installed on your smartphone.

At the moment, all that most of us have is the Octopus card, but it has only limited uses.

Jenny Cheung Hoi-yan, Kwai Chung

Teach children about organ donor register

Many patients in need of an ­organ transplant die before they can get one, because not enough people are signing up as organ donors.

The government needs to raise levels of awareness by promoting the importance of the organ donor register on social media websites like Facebook, Instagram and Twitter.

It also needs to get the ­message across to children, so it should talk to pupils in primary schools about how donating ­organs can help save lives.

Cecilia Tang, Yau Yat Chuen

Youngsters must protect privacy on net

Youngsters spend a lot of time on social network sites. While while this can have a very ­positive effect on their lives, there is also a downside which cannot be ignored.

Some of them spend so long on social networking that they eventually become addicted. This adversely affects their relationships with friends and ­family. Also, spending a lot of time on these sites can raise the risk of identity theft, if these young people are careless when online. Hackers can get personal ­information which may prove costly for young people.

Even youngsters who are not addicted but use the internet a lot can be at risk. They must take care and not give out personal details to people they do not know or trust.

Amy Hung, Tseung Kwan O