A day after his first teaching letter on the environment urged nations to take action on climate to save the planet and aid its poorest inhabitants, Francis on Friday invoked God's help to safeguard "all life".
"Lord, seize us with your power and light, help us to protect all life, to prepare for a better future," the pontiff wrote on Twitter.
Francis now has over 20 million followers on his nine-language @Pontifex account on the microblogging website.
