Hard Numbers: Guess Which Industry will be Worth $13 Trillion by 2050

9.7 billion: A new UN Population Division report projects that the global population will hit 9.7 billion by 2050, up from the current 7.7 billion. Most of that population growth will come from sub-Saharan Africa, which is expected to add another billion people over the next three decades.

13.3 trillion: In other projections to the year 2050, energy trackers at BloombergNEF estimate that the 62% increase in electricity demand over the next three decades will bring in $13.3 trillion in new investments, with $5.3 trillion going to wind and $4.2 trillion to solar. That's a lot of power but sweeping policy changes will still be needed to hit global climate targets.

9,000: Bitcoin, the world's original cryptocurrency, surged past $9,000 this week to a 13-month high following the news of Facebook's plan to launch its own digital currency and payment system. The prospect of the world's biggest social network moving into the crypto space has seemingly legitimized an industry that's been struggling with growth problems, fraud, and volatile prices.

1,232: Local authorities in Berlin this week approved a plan to freeze rent hikes in the city for the next five years as the German capital has become a major destination for European job seekers. Currently, the average monthly rent in Berlin is about $1,232, a 7% jump over the first three months of this year.

Technology has played a big role in accelerating globalization. While it's our business to advance technology, we also believe that technology should respect and even help protect the world's timeless values. That conviction has led us to announce a new and fourth pillar to Microsoft's AI for Good portfolio – our $125 million, five-year commitment to use artificial intelligence to tackle some of society's biggest challenges. This new pillar will focus on AI for Cultural Heritage. Read more at Microsoft On The Issues.

Does Boris Johnson strengthen or weaken the US-UK relationship?

Well I mean strengthens it in so far as he and Trump like each other. They're both oriented towards Brexit. They're kind of right-wing populists that aren't ideologically moored. But will it last? Boris could flip on a dime on any major issue as can Trump. So it's kind of volatile. Plus they both really love the media and when they're in front of each other with other people the potential to - I mean Boris upsets people and Trump easily takes offense. So this could easily go south.

Will Iran release the captured UK oil tanker?

I mean over time I suspect it will. But remember the UK has an Iranian tanker as well, so it's much more likely they work these things out together even if they're not explicitly linked, than suddenly the Iranians say, "Oh I'm sorry. Here's your tanker"

Will protests continue in Hong Kong?

It certainly seems that way. The question is what will China do about it? Xi Jinping is now saying that they are reaching the danger zone and the ability of the Chinese to hit back and hit back hard is real. I worry about those protesters.

Will Robert Mueller reveal anything new when he testifies on Capitol Hill?

I highly doubt it. He said very clearly that he does not intend to go beyond what was in his report. So Democrats looking for bombshells on collusion or obstruction are likely to be disappointed.

Can President Trump expand his electoral college edge in 2020?

Well he thinks he can. He thinks he can win in places like Minnesota and New Hampshire. I think it's more likely that he just hangs on to the Rust Belt states like Pennsylvania, Michigan and Wisconsin that got him there in 2016.

Should the governor of Puerto Rico resign?

Absolutely. Governor Rossello should resign. He's lost the confidence of the island. Puerto Rico needs a fresh start particularly after all these terrible text messages. He should definitely resign.

Finally for The Rant: today's rant is on Elizabeth Warren who put out a report today saying the economy is on the brink of collapse. It was very alarmist, certainly there are problems with the economy. Issues that could be fixed but she risks sounding like she's yelling fire in a crowded theater with calls like that.

"A regime willing to kill en masse to stay in power,' Karim Sadjadpour, an expert on Iranian, discusses the challenges facing the rise of democracy within the country.

Avi Loeb, The Chair of Harvard University's Astronomy Department, delves into the search for extraterrestrial life.