Davos 2019 Day One: Huawei chairman said trade war is slowing sales, Microsoft CEO talked tech's impact on humanity

The annual World Economic Forum began Tuesday, January 22, and will run until Friday, January 25.

Key speakers include German Chancellor Angela Merkel, IMF chief Christine Lagarde, and Japan Prime Minister Shinzo Abe.

Here is a list of all other world leaders attending.

Temperatures are below freezing, and as usual, security is tight.

A snow storm is wreaking havoc locally, but the event's aim is one of calm togetherness.

Huawei, the Chinese telecom company at the center of an international dispute, was in the spotlight.

Ken Hu, deputy chairman of Huawei, and other senior executives appeared at the conference, at a time when the company's CFO is under house arrest in Canada, under investigation for alleged dealings with Iran in violation of US sanctions.

There have also been concerns in the US about Huawei's ties to the Chinese government, and allegations that its equipment can be used for spying on other nations— something Huawei denies.

Hu appeared calm and composed during his talk at Davos, and mostly spoke about next generation 5G wireless technology. He also said the company has seen a damaging effect on its business because of the US-China trade-war.

Alphabet CFO Ruth Porat spoke on a panel entitled "Shaping a New Market Architecture."

Porat told the audience that data "is more like sunlight than oil," an attempt to reframe the debate about privacy and user data in positive terms. She said Alphabet company Google would support privacy legislation in the US, and would like users to trust the company is "doing what we should."

Outside of the Davos congress centre, where the annual conference is held, an advertisement for India's "Trillion Dollar Digital Economy" is seen.

This year, more than 100 CEO's from India will be attending Davos. The country is expected to have the fastest growing economy for the next two years, according to the International Monetary Fund.

Britain's Prince William interviewed legendary documentary-maker and conservationist David Attenborough.

The two talked about the way humans have impacted nature and the changes that Attenborough, 92, has seen throughout his decades-long career as a TV show presenter.

"We are now so numerous, so all-pervasive, the mechanisms that we have for destruction are so wholesale and so frightening, that we can actually just exterminate whole ecosystems without even noticing it,” Attenborough said. "We are destroying the natural world, and with that ourselves.

Microsoft CEO Satya Nadella said technology has an impact on "everything around us."

Nadella told the crowd, "Markets work, but there are limits, we have to deal with the decoupling between economic growth, jobs and wages — each of us will have to play a role. This is one of the challenges of our time."

President Emmanuel Macron also hosted Nadella, along with Snapchat's Evan Spiegel and JPMorgan Chase & Co CEO Jamie Dimon at a pre-Davos dinner at Versailles, France. Macron, though, is not planning on attending the conference this year, sitting it out along with other leaders, US President Donald Trump and UK Prime Minister Theresa May.

The conference's continued gender inequality: only 22 percent of participants are women.

Last year, 21 percent of attendees were women — so not much has changed in regard to gender equality at the conference.

Back in Davos, my fifth. The weather changes every year and so do the leaders taking the stage. Gender imbalance remains (only 22% of participants are female). I was in a session this morning with 88 audience members, five panelists and 10 staff. I counted SEVEN women. #WEF2019

Bill Gates spoke on how the world will pay for global health.

Bill Gates, co-founder of Microsoft and co-founder of Bill & Melinda Gates Foundation, spoke of the importance of vaccine accessibility in low-income countries for children under the age of 10 at Davos on Tuesday.

He was alongside other panelists for the "Financial Innovation for Global Health" roundtable like Dr. Ngozi Okonjo-Iweala, the co-chair of Gavi, Tedros Adhanom Ghebreyesus and the director of the World Health Organization.

Gates talked about precision medicine's inability to work on a large scale, and how prescription drug prices can be managed with taxes.

"People are more likely to perceive the bad news and don't see so much what has already improved," he said.